Shop All Protein Gel Buffers

BupH™ Tris-Glycine-SDS Buffer Packs (Thermo Scientific™)

Thermo Scientific BupH Tris-Glycine-SDS Buffer Packs are pouches of dry-blend powder that are each sufficient to make 500 mL of standard (pH 8.3) running buffer for SDS-PAGE (protein polyacrylamide gel electrophoresis).

Features of Thermo Scientific BupH Tris-Glycine-SDS Buffer Packs:

Tris-glycine-SDS buffer—dissolved in 500 mL of water, each pack makes 25 mM Tris, 192 mM glycine, 0.1% SDS, pH 8.3
Convenient—dissolve contents of one envelope in water and the buffer is ready to use
Save time and trouble—no weighing, no pH adjustment, no need to stock individual components, and no need to make and store large volumes of stock solution in advance of daily needs
Long shelf life—stocking and storage as dry packs eliminates concerns about long-term stability of stock solutions
Eliminate variables—our quality control ensures that every pack will yield the same, consistent buffer

Applications:
• Running buffer for Tris-glycine gel electrophoresis

BupH Dry-Blend Packs of Tris-glycine-SDS buffer are easy to use. Simply empty contents of one foil envelope pack into a beaker, add ultrapure water and stir to dissolve. The packs eliminate weighing time and tedious pH adjustments. When dissolved in 500 mL of water, each pack makes 25 mM Tris, 192 mM glycine, 0.1% SDS, pH 8.3.

Related Products
Pierce™ 10X Tris-Glycine SDS Buffer

NuPAGE™ Tris-Acetate SDS Running Buffer (20X) (Invitrogen™)

NuPAGE Tris-Acetate SDS Running Buffer (20X) is formulated for separation of proteins in their denatured state on Tris-Acetate gels. NuPAGE Tris-Acetate gels provide excellent separation of large molecular weight proteins when used with NuPAGE Tris-Acetate SDS Running Buffer. NuPAGE Tris-Acetate gels can also be run with Novex Tris-Glycine Native Running Buffer to resolve native proteins more effectively than with the Tris-Glycine gel system.

Recommended buffers
Run NuPAGE Tris-Acetate gels with NuPAGE Tris-Acetate SDS Running Buffer and to ensure good sample reduction and band resolution, use NuPAGE LDS Sample Buffer. For native running conditions, the Tris-Glycine Native running and sample buffers should be used.

See all available buffers and reagents available for SDS-PAGE

Novex™ IEF Cathode Buffer pH 3-10 (10X) (Invitrogen™)

Novex® IEF Cathode Buffer pH 3-10 (10X) is optimized pre-mixed IEF cathod buffer for using with Novex® pH 3-10 IEF gels. IEF is a sensitive technique which is affected by many factors. The optimized pre-mixed IEF buffers reduce variability and ensure consistent results.

Usage note: The IEF cathode buffer solutions contain a reagent that varies from white to light yellow in color. This color variation may produce a similar color variation in the final solution, from colorless to yellowish in tone. This color will not affect product performance.

No-Stain™ Protein Labeling Reagent (Invitrogen™)

The Invitrogen No-Stain Protein Labeling Reagent provides a flexible, accurate, rapid, and reliable method to visualize and normalize proteins in a gel or on a membrane (post-transfer). It forms covalent bonds to proteins in gels or on membranes within 10 minutes, does not require any de-staining steps, and can be instantly visualized using any commonly available imager. No-Stain reagent does not require any particular gels or other reagents and is compatible with gel stains and western workflows.

Instant visualization of proteins in gels
Coomassie and other gel staining and de-staining steps can be extremely time consuming and cumbersome. No-Stain Protein Labeling Reagent forms covalent bonds with the lysine amino acid side chains on all proteins in a gel within 10 minutes. Since lysine is one of the most abundant amino acids, No-Stain reagent enables detection of all proteins in a gel or on a membrane, and the strong signal emission from the covalently bonded reagent provides nanogram-level sensitivity.

Alternative to traditional gel staining reagents—provides more accurate normalization over a wide range of protein lysate concentrations (1–80 µg)
Sensitive—lower limit of detection of 20 ng per band
Specific—forms bonds only with the lysine side chains of proteins. Unbound reagent does not emit, thereby enabling a superior signal-to-noise ratio
Flexible—no need to change your gels to get stain-free convenience. No-Stain reagent provides stain-free convenience with any gel type (precast or pour-your-own gel)

Achieve the gold standard for quantitative western blotting
Protein normalization is a critical step in obtaining reliable and reproducible quantitative western blotting. Total protein normalization is considered the gold standard for quantitative western blotting. Many leading journals have developed guidelines for submitting western blotting research and select quotes from those guidelines are provided below.

• “For quantitative comparisons, appropriate reagents, controls and imaging methods with linear signal ranges should be used” – Nature
• “Record how data were obtained, whether signal intensity was linear with antigen loading, and how protein loading was normalized” – Journal of Biological Chemistry
• “Normalize signal intensity to total protein loading (assessed by staining membranes for total protein) whenever possible” – Journal of Biological Chemistry
• “House-keeping proteins should not be used for normalization without evidence that manipulations do not affect expression” – Journal of Biological Chemistry

An accurate loading control should display a linear relationship between signal intensity and sample load in all experimental conditions. The signal intensity obtained from labeling of total proteins on a membrane with No-Stain reagent ensures a linear relationship between signal intensity and sample load (see figure below) in all experimental conditions. Therefore, the use of No-Stain reagent in quantitative western blot applications enables the use of total protein as an ideal loading control.

Easy-to-use protocol—labeling of proteins within 10 minutes on either nitrocellulose or PVDF membranes
Rapid visualization using a wide-range of imagers with UV or fluorescence light sources
Accurate total protein normalization—the broad linear range for protein detection of 1–80 μg enables detection of No-Stain signal along with that of your target protein to achieve accurate total protein normalization
Sensitive and stable—nanogram level sensitivity with a stable signal that is compatible with downstream immunodetection steps
Superior analysis—housekeeping proteins are susceptible to signal saturation and other biological variations which are not observed when using No-Stain reagent for total protein normalization

Learn more about No-Stain Protein Labeling Reagent ›

Cathode Buffer Container (CBC) for 3500 Series Systems for Protein Quality Analysis (Applied Biosystems™)

The Cathode Buffer Container (CBC) contains 1X running buffer to support protein quality analysis applications on the Applied Biosystems™ 3500 Series genetic analyzers for protein quality analysis. The container has two separate compartments: the left provides the cathode buffer for electrophoresis and the right provides for a capillary wash and spent polymer waste ejection functionality between injections. The CBC is ready-to-use and disposable with a radio frequency identification (RFID) tag incorporated into the label. The top of the CBC is heat-sealed with a plastic film, which is removed prior to installation on the instrument. Each package includes four containers.

NuPAGE™ MES SDS Running Buffer (20X) (Invitrogen™)

NuPAGE MES SDS Running Buffer (20X) is formulated for running proteins on NuPAGE Bis-Tris gels. It is recommended for separating small- to medium-sized proteins.

Use the right buffer to optimize protein separations
NuPAGE MES SDS Running Buffer and NuPAGE MOPS SDS Running Buffer can both be used with NuPAGE Bis-Tris gels. MES has a lower pKa than MOPS, making the MES SDS Running Buffer faster than the MOPS SDS running buffers. The difference in ion migration affects stacking and results in a difference in protein separation range between these buffers. Use of MOPS buffer allows proteins to run slower than when using MES buffer.

Compare protein migration patterns using MES and MOPs on NuPAGE Bis-Tris gels

See all available buffers and reagents available for SDS-PAGE

4X Bolt™ LDS Sample Buffer (Invitrogen™)

Bolt LDS Sample Buffer (4X) is used to prepare protein samples for denaturing gel electrophoresis with Bis-Tris Plus gels. It contains lithium dodecyl sulfate, pH 8.4, which allows for maximum activity of the reducing agent.

See all available buffers and reagents available for SDS-PAGE

Bolt LDS Sample Buffer contains Coomassie G250 and Phenol Red as tracking dyes instead of bromophenol blue. Coomassie G250 gives a sharp dye front with both MES and MOPS SDS running buffers and migrates much closer to the moving ion front than bromophenol blue. Bromophenol blue runs more slowly than some peptides with MES SDS Running Buffer. This ensures that small peptides do not run off the gels.

To use: Heat the sample in a 1X dilution (reduced or non-reduced) at 70°C for 10 minutes for optimal results.

Note: Bolt LDS Sample Buffer should be brought to room temperature (25°C) prior to use. It is a highly viscous and concentrated solution containing twice the amount of LDS compared to the amount of SDS in typical sample buffers. Bolt LDS Sample Buffer also contains a higher concentration glycerol.

Bolt™ Transfer Buffer (20X) (Invitrogen™)

Bolt Transfer Buffer (20X) is used to transfer proteins from Bolt Bis-Tris Plus gels to membranes for western blotting. It maintains the neutral pH environment established during electrophoresis. The neutral pH protects against modification of amino acid side chains and is compatible with N-terminal protein sequencing using Edman degradation.

Bolt Antioxidant may be used with Bolt Transfer Buffer to enhance transfer of reduced proteins to membranes.

See all available buffers and reagents available for SDS-PAGE

NuPAGE™ Tris-Acetate SDS Buffer Kit (for Tris-Acetate Gels), Contains 1 ea. LA0041, NP0004, NP0005, NP0007 (Invitrogen™)

NuPAGE Tris-Acetate SDS Buffer Kit is designed for separation of medium to large size proteins on Tris-Acetate gels. This kit includes the following buffers:
• NuPAGE Tris-Acetate SDS Running Buffer (20X, Cat. No. LA0041)
• NuPAGE Sample Reducing Agent (10X, 250 µL, Cat. No. NP0004)
• NuPAGE Antioxidant (Cat. No. NP0005)
• NuPAGE LDS Sample Buffer (4X, 10 mL, Cat. No. NP0007)

See all available buffers and reagents available for SDS-PAGE

Novex™ IEF Sample Buffer pH 3-7 (2X) (Invitrogen™)

Novex® IEF Sample Buffer pH 3-7 (2X) is optimized pre-mixed IEF sample buffer for using with Novex® pH 3-7 IEF gels. IEF is a sensitive technique which is affected by many factors. The optimized pre-mixed IEF buffers reduce variability and ensure consistent results.

Pierce™ 10X Tris-Glycine SDS Buffer (Thermo Scientific™)

Thermo Scientific Pierce 10X Tris-Glycine-SDS Buffer is a space-saving stock solution that is ideal for quickly preparing standard Tris-glycine-SDS (pH 8.3) running buffer used for SDS-PAGE (protein polyacrylamide gel electrophoresis).

Features of 10X Tris-Glycine-SDS Buffer:

Tris-glycine-SDS buffer—diluted 10-fold in water, the solution yields 0.025M Tris, 0.192M glycine, 0.1% SDS, pH 8.5
Easy to use—no packets to open and no powder to dissolve
Increased accuracy—eliminates the possibility of powder remaining in a packet
Saves time—10X concentration eliminates time spent waiting for powder to dissolve
Saves space—storage as concentrated stock minimizes bench space needed for solutions

Pierce Concentrated Buffers are ready to use without having to weigh and dissolve dry ingredients or to adjust the pH with concentrated acid or base. Simply dilute the stock solution with pure water and proceed with your experiment. The 10X Tris-Glycine-SDS Buffer makes 0.025M Tris, 0.192M glycine, 0.1% SDS, pH 8.5, when diluted to 1X with water. SDS is sodium dodecyl sulfate.

Applications:
• Running buffer for Tris-glycine gel electrophoresis

Related Products
BupH™ Tris-Glycine-SDS Buffer Packs

20X Bolt™ MES SDS Running Buffer (Invitrogen™)

Bolt MES SDS Running Buffer (20X) is formulated for running proteins on Bolt Bis-Tris gels. It is recommended for separating small- to medium-sized proteins.

Use the right buffer to optimize protein separations
Bolt MES SDS Running Buffer and Bolt MOPS SDS Running Buffer can both be used with Bolt Bis-Tris gels. MES has a lower pKa than MOPS, making the MES SDS Running Buffer faster than the MOPS SDS running buffers. The difference in ion migration affects stacking and results in a difference in protein separation range between these buffers. Use of MOPS buffer allows proteins to run slower than when using MES buffer.

Compare protein migration patterns using MES and MOPs on Bolt Bis-Tris Plus gels

See all available buffers and reagents available for SDS-PAGE

BupH™ Tris-Glycine Buffer Packs (Thermo Scientific™)

Thermo Scientific BupH Tris-Glycine Transfer Buffer Packs are pouches of dry-blend powder that are each sufficient to make 500 mL of standard transfer buffer for wet or semi-dry electrophoretic protein transfer from gel to blotting membrane.

Features of Thermo Scientific BupH Tris-Glycine Transfer Buffer Packs:

Tris-glycine buffer—dissolved in 400 mL of water and 100 mL methanol, makes 25 mM Tris, 192 mM glycine, pH 8
Convenient—dissolve contents of one envelope in water and the buffer is ready to use
Save time and trouble—no weighing, no pH adjustment, no need to stock individual components, and no need to make and store large volumes of stock solution in advance of daily needs
Long shelf life—stocking and storage as dry packs eliminates concerns about long-term stability of stock solutions
Eliminate variables—our quality control ensures that every pack will yield the same, consistent buffer

Applications:
• Running buffer for gel-to-membrane electrophoretic transfer

BupH Dry-Blend Packs of Tris-glycine buffer are easy to use. Simply empty contents of one foil envelope pack into a beaker, add ultrapure water and stir to dissolve. The packs eliminate weighing time and tedious pH adjustments. When dissolved in 400 mL of water and 100 mL methanol, makes 25 mM Tris, 192 mM glycine, pH 8.

Related Products
Pierce™ 10X Tris-Glycine Buffer

Novex™ IEF Sample Buffer pH 3-10 (2X) (Invitrogen™)

Novex® IEF Sample Buffer pH 3-10 (2X) is optimized pre-mixed IEF sample buffer for using with Novex® pH 3-10 IEF gels. IEF is a sensitive technique which is affected by many factors. The optimized pre-mixed IEF buffers reduce variability and ensure consistent results.

NativePAGE™ 5% G-250 Sample Additive (Invitrogen™)

NativePAGE™ 5% G-250 Sample Additive is added to samples prepared with the NativePAGE™ Sample Buffer and detergents (10% DMM or 5% Digitonin) just prior to applying the samples to NativePAGE™ gels. This Additive is also included in the NativePAGE™ Sample Prep Kit. The samples prepared with 10% DDM, 5% Digitonin, or the NativePAGE™ Sample Prep Kit are compatible with NativePAGE™ Novex Bis-Tris Gels for native electrophoresis showing increased resolution and reduced streaking.

ZOOM™ Focusing Buffer pH 3-7 (Invitrogen™)

The ZOOM® IEF Fractionator offers a fast, reliable method to reduce sample complexity, enrich low abundance proteins, and increase the dynamic range of detection. Solution phase isoelectric focusing with the ZOOM® IEF Fractionator provides reproducible separations in three hours. Fractionated samples are ready for further analysis by two dimensional gel electrophoresis (2DE), one dimensional gel electrophoresis (1DE), or two dimensional liquid chromatography/mass spectrometry (2D LC/MS).

The ZOOM® IEF Fractionator System (Figure 1) consists of the following components:

• ZOOM® IEF Fractionator is built for safety, reliability, and durability. It includes easy-to-assemble sample chambers, in-built buffer chambers, buffer trough, removable electrode assembly, and safety lid.
• ZOOM® Disks are pre-cast polyacrylamide gels that eliminate the need for manual preparation and minimize any chance of cross contamination. These immobilized buffered disks are pre-labeled, disposable, and designed for single use, ensuring consistent and reproducible fractionation. They resolve samples into as many as 7 fractions (using 8 disks of specific pH) to six fractions (using six disks of specific pH) from pH 3-12. Simply place each disk between the sample chambers in the ZOOM® IEF Fractionator to allow separation in a specific pH range.
• ZOOM® Reagents are proteomic grade reagents, including ZOOM® 2D Protein Solubilizers urea, thiourea, CHAPS, and ampholytes, that ensure optimal conditions for sample preparation.
• Basic Protein Kit which includes ZOOM® Discs and ZOOM Strips for IEF of basic proteins, focusing buffers, and solubilizer kits.

Sample Chamber and Fractionator Unit Set-up Procedure
Figures 4-6 illustrate assembly of the sample chambers and fractionator unit. The sample chamber and components fit together easily and offer a leak-proof seal. Simply place disks between the sample chambers in the ZOOM® IEF Fractionator to allow separation in a specific pH range. For example, if you want to fractionate proteins between pH 4.6 and 5.4, flank a sample chamber with a ZOOM (r) Disk of pH 4.6 and one of pH 5.4.

Downstream Processing by 2D Gel Electrophoresis
Following fractionation, the separated samples can be subjected to further analysis using narrow or broad range ZOOM® Strips on the ZOOM® IPGRunner™ System. Follow with second dimension analysis using neutral pH NuPAGE® ZOOM® Gels.

Novex™ pH 3-7 IEF Buffer Kit, Includes LC5300, LC5370, LC5371 (Invitrogen™)

Novex® pH 3-7 IEF Buffer Kit is optimized for using with Novex® pH 3-7 IEF gels. Each kit includes LC5300, LC5370, LC5371

Novex™ Zymogram Renaturing Buffer (10X) (Invitrogen™)

Novex® Zymogram Gels are excellent tools for detecting and characterizing proteases that utilize casein or gelatin as a substrate. Proteases are run on a gel containing one of these substrates under denaturing conditions and visualized as clear bands against a dark background following a simple renaturing, developing, and staining protocol. Zymogram gels are commonly used to detect matrix metalloproteinases.

Formulation: All Novex® Zymogram Gels are Tris-Glycine gels with a substrate (gelatin or casein) incorporated into the gel. They are made with high-purity, strictly quality-controlled reagents: Tris base, HCl, acrylamide, bisacrylamide, TEMED, APS, highly purified water and casein or gelatin as the substrate. All have a 4% stacking gel.

Zymogram Gel Types: The 10% Zymogram (Gelatin) Gel is a 10% Tris-Glycine gel with 0.1% gelatin as the substrate. The 12% Novex® Zymogram (Casein) Gel is a 12% Tris-Glycine gel with 0.05% casein as the substrate. The 4-16% Novex® Zymogram (Blue Casein) Gel is a 4-16% Novex® Tris-Glycine gel with 0.1% casein as the substrate and a proprietary dye incorporated throughout the gel.

Sensitivity Level:
10% Zymogram Gelatin Gel: 5 x 10-6 units of collagenase
12% Zymogram Casein Gel: 7 x 10-4 units of trypsin
4-16% Zymogram Casein Gel: 1.5 x 10-3 units of trypsin

Recommended Buffers: Use Novex® Tris-Glycine SDS Sample Buffer and Novex® Tris-Glycine SDS Running Buffer with these gels. Novex® Zymogram Renaturing and Developing Buffers are also recommended.

Pierce™ 10X Tris-Glycine Buffer (Thermo Scientific™)

Thermo Scientific Pierce 10X Tris-Glycine Buffer is a space-saving stock solution that is ideal for quickly preparing standard Tris-glycine (pH 8.5) transfer buffer used for Western blotting.

Features of Thermo Scientific Pierce 10X Tris-Glycine Buffer:

Tris-glycine buffer—diluted 10-fold in water or 20% methanol, the solution yields 0.025M Tris, 0.192M glycine, pH 8.5
Easy to use—no packets to open and no powder to dissolve
Increased accuracy—eliminates the possibility of powder remaining in a packet
Saves time—10X concentration eliminates time spent waiting for powder to dissolve
Saves space—storage as concentrated stock minimizes bench space needed for solutions

Required:
• Methanol or ethanol as required by specific protocols.

Applications:
• Transfer buffer for Tris-glycine gel electrophoresis

Related Products
BupH™ Tris-Glycine Buffer Packs

Novex™ pH 3-10 IEF Buffer Kit,Includes LC5300, LC5310, LC5311 (Invitrogen™)

Novex® pH 3-10 IEF Buffer Kit is optimized for using with Novex® pH 3-10 IEF gels. Each kit includes LC5300, LC5310, LC5311.

NuPAGE™ MES SDS Buffer Kit (for Bis-Tris Gels) (Invitrogen™)

The NuPAGE MES SDS Buffer Kit is designed for separation of small- to medium-size proteins on NuPAGE Bis-Tris gels and includes the following buffers:
• NuPAGE MES SDS Running Buffer (20X, 500 mL, Cat. No. NP0002)
• NuPAGE Sample Reducing Agent (10X, 250 µL, Cat. No. NP0004)
• NuPAGE Antioxidant (Cat. No. NP0005)
• NuPAGE LDS Sample Buffer (4X, 10 mL, Cat. No. NP0007)

Compare protein migration patterns using MES and MOPs on NuPAGE Bis-Tris gels

See all available buffers and reagents available for SDS-PAGE

NuPAGE™ Transfer Buffer (20X) (Invitrogen™)

NuPAGE Transfer Buffer (20X) is used to transfer proteins from NuPAGE Bis-Tris and NuPAGE Tris-Acetate gels to membranes for western blotting. It maintains the neutral pH environment established during electrophoresis. The neutral pH protects against modification of amino acid side chains and is compatible with N-terminal protein sequencing using Edman degradation.

NuPAGE Antioxidant may be used with NuPAGE Transfer Buffer to enhance transfer of reduced proteins to membranes.

See all available buffers and reagents available for SDS-PAGE

Pierce™ 10X Western Blot Transfer Buffer, Methanol-free (Thermo Scientific™)

Thermo Scientific Pierce 10X Western Blot Transfer Buffer, Methanol-free is a space-saving stock solution for preparing the methanol-free transfer buffer used with cooled, tank (wet) western blotting transfer apparatus.

Features of 10X Western Blot Transfer Buffer, Methanol-free:

Transfer Buffer—diluted 10-fold in water, the solution is ready to use for electrophoresis (i.e., wet tank transfer from mini gels)
Easy to use—no packets to open, no powder to dissolve, and no methanol required
Increased accuracy—eliminates the possibility of powder remaining in a packet
Saves time—10X concentration eliminates time spent waiting for powder to dissolve
Saves space—storage as concentrated stock minimizes bench space needed for solutions

Pierce Concentrated Buffers are ready to use without having to weigh and dissolve dry ingredients or to adjust the pH with concentrated acid or base. Simply dilute the stock solution with pure water and proceed with your experiment. The 10X Western Blot Transfer Buffer is ready to use upon dilution to 1X with water; it does not contain methanol and the addition of methanol is not necessary for use in electrophoresis.

Applications:
• Wet (tank) western blot transfer of proteins to a membrane

ZOOM™ Cathode Buffer 10X pH 9-12 (Invitrogen™)

The ZOOM® IEF Fractionator offers a fast, reliable method to reduce sample complexity, enrich low abundance proteins, and increase the dynamic range of detection. Solution phase isoelectric focusing with the ZOOM® IEF Fractionator provides reproducible separations in three hours. Fractionated samples are ready for further analysis by two dimensional gel electrophoresis (2DE), one dimensional gel electrophoresis (1DE), or two dimensional liquid chromatography/mass spectrometry (2D LC/MS).

The ZOOM® IEF Fractionator System (Figure 1) consists of the following components:

• ZOOM® IEF Fractionator is built for safety, reliability, and durability. It includes easy-to-assemble sample chambers, in-built buffer chambers, buffer trough, removable electrode assembly, and safety lid.
• ZOOM® Disks are pre-cast polyacrylamide gels that eliminate the need for manual preparation and minimize any chance of cross contamination. These immobilized buffered disks are pre-labeled, disposable, and designed for single use, ensuring consistent and reproducible fractionation. They resolve samples into as many as 7 fractions (using 8 disks of specific pH) to six fractions (using six disks of specific pH) from pH 3-12. Simply place each disk between the sample chambers in the ZOOM® IEF Fractionator to allow separation in a specific pH range.
• ZOOM® Reagents are proteomic grade reagents, including ZOOM® 2D Protein Solubilizers urea, thiourea, CHAPS, and ampholytes, that ensure optimal conditions for sample preparation.
• Basic Protein Kit which includes ZOOM® Discs and ZOOM Strips for IEF of basic proteins, focusing buffers, and solubilizer kits.

Sample Chamber and Fractionator Unit Set-up Procedure
Figures 4-6 illustrate assembly of the sample chambers and fractionator unit. The sample chamber and components fit together easily and offer a leak-proof seal. Simply place disks between the sample chambers in the ZOOM® IEF Fractionator to allow separation in a specific pH range. For example, if you want to fractionate proteins between pH 4.6 and 5.4, flank a sample chamber with a ZOOM (r) Disk of pH 4.6 and one of pH 5.4.

Downstream Processing by 2D Gel Electrophoresis
Following fractionation, the separated samples can be subjected to further analysis using narrow or broad range ZOOM® Strips on the ZOOM® IPGRunner™ System. Follow with second dimension analysis using neutral pH NuPAGE® ZOOM® Gels.

Pierce™ LDS Sample Buffer, Non-Reducing (4X) (Thermo Scientific™)

Thermo Scientific Pierce LDS Sample Loading Buffer (4X) is a nonreducing lithium dodecyl sulfate sample loading buffer, a unique alternative to homemade and other commercial gel-loading dyes.

Features of LDS Sample Loading Buffer:

Concentrated—4X formulation provides more versatility than traditional 2X buffers
Nonreducing—ready to use for non-reducing SDS-PAGE, or the preferred type and amount of reducing agent (e.g., DTT) can be added to produce reducing conditions
SDS alternative—lithium dodecyl sulfate (LDS) replaces sodium dodecyl sulfate (SDS) of traditional loading buffers but functions equally well
Physiologic pH—buffered with triethanolamine (pH 7.6) rather than Tris (pH 6.8)
Lane marker dyes—includes trace amounts of phenol red and coomassie G250 as visible markers of the dye front
Convenient—stable at room temperature, enabling storage at the bench where electrophoresis is performed

LDS Sample Buffer, Non-Reducing (4X) is a convenient sample buffer for use in SDS-polyacrylamide gel electrophoresis (SDS-PAGE). The buffer contains coomassie dye, enabling visualization of the electrophoretic progress by the location of the dye front. The LDS Sample Buffer, Non-Reducing (4X) may be used in denaturing gels and is compatible with both coomassie and silver staining and Western blotting applications.

NuPAGE™ MOPS SDS Running Buffer (20X) (Invitrogen™)

NuPAGE MOPS SDS Running Buffer (20X) is formulated for running proteins on NuPAGE Bis-Tris gels. It is recommended for separating medium- to large-sized proteins.

Use the right buffer to optimize protein separations
NuPAGE MES SDS Running Buffer and NuPAGE MOPS SDS Running Buffer can both be used with NuPAGE Bis-Tris gels. MES has a lower pKa than MOPS, making the MES SDS Running Buffer faster than MOPS SDS running buffers. The difference in ion migration affects stacking and results in a difference in protein separation range between these buffers. Use of MOPS buffer allows proteins to run slower than when using MES buffer.

Compare protein migration patterns using MES and MOPs on NuPAGE Bis-Tris gels

See all available buffers and reagents available for SDS-PAGE

BupH™ Tris-HEPES-SDS Running Buffer (Thermo Scientific™)

Thermo Scientific BupH Tris-HEPES-SDS Buffer Packs are pouches of dry-blend powder that are each sufficient to make 500 mL of running buffer for gel electrophoresis (SDS-PAGE) with Thermo Scientific Precise Precast Protein Gels.

Features of Thermo Scientific BupH Tris-HEPES-SDS Buffer Packs:

Tris-HEPES-SDS buffer—dissolved in 500 mL of water, each pack makes 0.1M Tris, 0.1M HEPES, 3 mM SDS, pH 8
Convenient—dissolve contents of one envelope in water and the buffer is ready to use
Save time and trouble—no weighing, no pH adjustment, no need to stock individual components, and no need to make and store large volumes of stock solution in advance of daily needs
Long shelf life—stocking and storage as dry packs eliminates concerns about long-term stability of stock solutions
Eliminate variables—our quality control ensures that every pack will yield the same, consistent buffer

Applications:
• Running buffer for SDS-PAGE with Thermo Scientific Precise Precast Gels (e.g., Part No. 25224)

BupH Dry-Blend Packs of Tris-HEPES-SDS buffer are easy to use. Simply empty contents of one foil envelope pack into a beaker, add ultrapure water and stir to dissolve. The packs eliminate weighing time and tedious pH adjustments. When dissolved in 500 mL of water, each pack makes 0.1M Tris, 0.1M HEPES, 3 mM SDS, pH 8. HEPES is 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid.

Related Products
Pierce™ 20X Tris-HEPES-SDS Buffer

NativePAGE™ Running Buffer Kit (Invitrogen™)

The NativePAGE™ Running Buffer Kit contains the NativePAGE™ Running Buffer (20X), which is used to make the NativePAGE™ Cathode and Anode Running Buffers for use with an XCell SureLock® Mini Cell when running NativePAGE™ Gels. The kit also contains the NativePAGE™ Cathode Buffer Additive (20X) that is used with the NativePAGE™ Running Buffer to make the Cathode Running Buffer for the system.

NuPAGE™ LDS Sample Buffer (4X) (Invitrogen™)

NuPAGE LDS Sample Buffer (4X) is used to prepare protein samples for denaturing gel electrophoresis with Bis-Tris or Tris-Acetate gels. It contains lithium dodecyl sulfate, pH 8.4, which allows for maximum activity of the reducing agent.

See all available buffers and reagents available for SDS-PAGE

NuPAGE LDS Sample Buffer contains Coomassie G250 and Phenol Red as tracking dyes instead of bromophenol blue. Coomassie G250 gives a sharp dye front with both MES and MOPS SDS running buffers and migrates much closer to the moving ion front than bromophenol blue. Bromophenol blue runs more slowly than some peptides with MES SDS Running Buffer. This ensures that small peptides do not run off the gels.

To use: Heat the sample in a 1X dilution (reduced or non-reduced) at 70°C for 10 minutes for optimal results.

Note: NuPAGE LDS Sample Buffer should be brought to room temperature (25°C) prior to use. It is a highly viscous and concentrated solution containing twice the amount of LDS compared to the amount of SDS in typical sample buffers. NuPAGE LDS Sample Buffer also contains a higher concentration glycerol.

Novex™ Tricine SDS Running Buffer (10X) (Invitrogen™)

Novex Tricine SDS Running Buffer (2X) is formulated for separation of proteins in their denatured state on tricine gels. Tricine gels are specifically designed for the resolution of low molecular weight proteins. In this buffer system, tricine substitutes glycine in the running buffer, resulting in more efficient stacking and destacking of low molecular weight proteins and higher resolution of smaller peptides.

Recommended buffers: Use with tricine sample buffer to obtain optimal separation with tricine SDS running buffer.

See all buffers and reagents for SDS-PAGE ›

Novex™ Zymogram Developing Buffer (10X) (Invitrogen™)

Novex® Zymogram Gels are excellent tools for detecting and characterizing proteases that utilize casein or gelatin as a substrate. Proteases are run on a gel containing one of these substrates under denaturing conditions and visualized as clear bands against a dark background following a simple renaturing, developing, and staining protocol. Zymogram gels are commonly used to detect matrix metalloproteinases.

Formulation: All Novex® Zymogram Gels are Tris-Glycine gels with a substrate (gelatin or casein) incorporated into the gel. They are made with high-purity, strictly quality-controlled reagents: Tris base, HCl, acrylamide, bisacrylamide, TEMED, APS, highly purified water and casein or gelatin as the substrate. All have a 4% stacking gel.

Zymogram Gel Types: The 10% Zymogram (Gelatin) Gel is a 10% Tris-Glycine gel with 0.1% gelatin as the substrate. The 12% Novex® Zymogram (Casein) Gel is a 12% Tris-Glycine gel with 0.05% casein as the substrate. The 4-16% Novex® Zymogram (Blue Casein) Gel is a 4-16% Novex® Tris-Glycine gel with 0.1% casein as the substrate and a proprietary dye incorporated throughout the gel.

Sensitivity Level:
10% Zymogram Gelatin Gel: 5 x 10-6 units of collagenase
12% Zymogram Casein Gel: 7 x 10-4 units of trypsin
4-16% Zymogram Casein Gel: 1.5 x 10-3 units of trypsin

Recommended Buffers: Use Novex® Tris-Glycine SDS Sample Buffer and Novex® Tris-Glycine SDS Running Buffer with these gels. Novex® Zymogram Renaturing and Developing Buffers are also recommended.

Novex™ Tris-Glycine SDS Running Buffer (10X) (Invitrogen™)

Novex Tris-Glycine SDS Running Buffer (10X) is formulated for separation of proteins in their denatured state on Tris-Glycine gels. Tris-Glycine gels provide reproducible separation of a wide range of proteins into well-resolved bands.

Separate native or denatured proteins
Novex Tris-Glycine gels do not contain SDS and can be used to accurately separate both native and denatured proteins, depending upon the sample and running buffers used. To separate denatured proteins on Novex Tris-Glycine gels, use Novex Tris-Glycine SDS Sample Buffer and Novex Tris-Glycine SDS Running Buffer. To separate native proteins use Novex Tris-Glycine Native Sample Buffer and Novex Tris-Glycine Native Running Buffer.

See all available buffers and reagents available for SDS-PAGE

Novex™ IEF Anode Buffer (50X) (Invitrogen™)

Novex® IEF Anode Buffer (50X) is optimized pre-mixed IEF anode buffer for using with Novex® IEF gels. IEF is a sensitive technique which is affected by many factors. The optimized pre-mixed IEF buffers reduce variability and ensure consistent results.

Anode Buffer Container (ABC) for 3500 Series Systems for Protein Quality Analysis (Applied Biosystems™)

The Anode Buffer Container (ABC) contains 1X running buffer to support protein quality analysis applications on the Applied Biosystems™ 3500 Series genetic analyzers for protein quality analysis. The ABC is ready-to-use and disposable with a radio frequency identification (RFID) tag incorporated into the label. The top of the ABC is heat-sealed with a plastic film, which is removed prior to installation on the instrument. Each package includes four containers.

Novex™ IEF Cathode Buffer pH 3-7 (10X) (Invitrogen™)

Novex® IEF Cathode Buffer pH 3-7 (10X) is optimized pre-mixed IEF cathod buffer for using with Novex® pH 3-7 IEF gels. IEF is a sensitive technique which is affected by many factors. The optimized pre-mixed IEF buffers reduce variability and ensure consistent results.

Usage note: The IEF cathode buffer solutions contain a reagent that varies from white to light yellow in color. This color variation may produce a similar color variation in the final solution, from colorless to yellowish in tone. This color will not affect product performance.

NativePAGE™ Sample Buffer (4X) (Invitrogen™)

NativePAGE™ Sample Buffer (4X) is a solution used to solubilize native protein samples prior to use with the NativePAGE™ Gel System. The buffer is used along with 10% DDM or 5% Digitonin detergents to solubilize hydrophobic or membrane proteins. This buffer is also included in the NativePAGE™ Sample Prep Kit. The samples prepared with 10% DDM, 5% Digitonin, or the NativePAGE™ Sample Prep Kit are compatible with NativePAGE™ Novex Bis-Tris Gels for native electrophoresis showing increased resolution and reduced streaking.

Fluorescent Compatible Sample Buffer (4X, non-reducing) (Invitrogen™)

Invitrogen Fluorescent Compatible Sample Buffer is for use in SDS-polyacrylamide gel electrophoresis (SDS-PAGE). It is optimized for use in fluorescent western blotting as it does not interfere in fluorescent channels, unlike other standard sample buffers. Fluorescent Compatible Sample Buffer is non-reducing but may also be used under denaturing conditions.

Non-reducing—ready-to-use for non-reducing SDS-PAGE, or the preferred type and amount of reducing agent (e.g., DTT) can be added to produce reducing conditions
Lane marker dyes—visible markers of the dye front
Convenient—stable at room temperature, enabling storage at the bench where electrophoresis is performed
Concentrated—4X formulation provides more versatility than traditional 2X buffers
Ideal for fluorescent detection—formulated to prevent auto fluorescence during fluorescent detection

NuPAGE™ MOPS SDS Buffer Kit (for Bis-Tris Gels) (Invitrogen™)

The NuPAGE MOPS SDS Buffer Kit is designed for separation of medium- to large-size proteins on NuPAGE Bis-Tris gels and includes the following buffers:
• NuPAGE MOPS SDS Running Buffer (20X, 500 mL, Cat. No. NP0001)
• NuPAGE Sample Reducing Agent (10X, 250 µL, Cat. No. NP0004)
• NuPAGE Antioxidant (Cat. No. NP0005)
• NuPAGE LDS Sample Buffer (4X, 10 mL, Cat. No. NP0007)

Compare protein migration patterns using MES and MOPs on NuPAGE Bis-Tris gels

See all available buffers and reagents available for SDS-PAGE

Pierce™ 1-Step Transfer Buffer (Thermo Scientific™)

Thermo Scientific Pierce 1-Step Transfer Buffer is designed for rapid semi-dry transfer of 10-300kDa proteins from polyacrylamide gels (SDS-PAGE) to nitrocellulose or PVDF membranes using the Pierce G2 Fast Blotter.

Features of 1-Step Transfer Buffer:

Fast—high ionic strength formulation provides 5- to 10-minute protein transfer when used with compatible fast semi-dry blotting systems
Ready to use—supplied as a 1X solution that is stable and ready to use at room temperature
Optimized—designed for seamless and reliable performance with the Pierce G2 Fast Blotter
Compatible—effective with other semi-dry transfer devices equipped with a suitable high-current power supply, including the original Pierce Fast Semi-Dry Blotter (Part No. 88217)
Economical—excellent performance without the special or costly consumables that are required by other fast semi-dry transfer devices

When used with the Pierce G2 Fast Blotter, this buffer provides effective gel-to-membrane transfer of proteins in 5 to 10 minutes with efficiency that is equal to, or better than, conventional Western blotting techniques. Pierce 1-Step Transfer Buffer is also compatible with other protein semi-dry transfer devices, including the original Pierce Fast Semi-Dry Blotter (Part No. 88217), when they are paired with a suitable high-current power supply. Such devices provide constant high current (1.3 to 5.0 amps) to rapidly transfer proteins via the high ionic strength conditions supplied by the transfer buffer.

Requires:
Pierce G2 Fast Blotter (Part No. 62288) or other semi-dry transfer device that is equipped or paired with a capable high-current power supply.

Fast blotting methods require a high-current power supply, such as the Pierce G2 Fast Blotter, and an optimized high ionic strength transfer buffer, such as Pierce 1-Step Transfer Buffer. By increasing the current, excellent transfer efficiency can be achieved in much shorter time compared to conventional methods. Amperage is held at a constant rate based on the surface area of the transfer stack(s) (~22-23mA/cm2) and voltage is limited to 25V.

20X Bolt™ MOPS SDS Running Buffer (Invitrogen™)

Bolt MOPS SDS Running Buffer (20X) is formulated for running proteins on Bolt Bis-Tris Plus gels. It is recommended for separating medium- to large-sized proteins.

Use the right buffer to optimize protein separations
Bolt MES SDS Running Buffer and Bolt MOPS SDS Running Buffer can both be used with Bolt Bis-Tris Plus gels. MES has a lower pKa than MOPS, making the MES SDS Running Buffer faster than the MOPS SDS running buffers. The difference in ion migration affects stacking and results in a difference in protein separation range between these buffers. Use of MOPS buffer allows proteins to run slower than when using MES buffer.

Compare protein migration patterns using MES and MOPs on Bolt Bis-Tris Plus gels

See all available buffers and reagents available for SDS-PAGE

E-PAGE™ Loading Buffer 1 (Invitrogen™)

The E-PAGE™ High-Throughput (HTP) Protein Electrophoresis System is the only system available for fast, bufferless, high-throughput protein analysis. It consists of E-PAGE™ 96 gels, E-Base™ integrated devices, the E-Holder™ platform, and the free E-Editor™ 2.0 software.

E-PAGE™ 96 Gels
E-PAGE™ 96 gels (Table 1) are self-contained, pre-cast gels that include a gel matrix and electrodes packaged inside a disposable, UV-transparent cassette. Each E-PAGE™ 96 gel contains 96 sample lanes and 8 marker lanes in a patented staggered well format with a 1.6-cm run length (Figure 1). The well openings of the E-PAGE™ 96 cassette are compatible with the standard 96-well plate format and can be conveniently loaded with a multichannel pipettor or 8-, 12-, or 96-tip liquid-handling robotic devices (Figure 2). E-PAGE™ 96 cassettes are conveniently opened with a butterfly opener to remove the gel for staining or blotting (Figures 3 and 4). In addition, each E-PAGE™ 96 cassette is labeled with an individual barcode to facilitate identification of the gel using commercial barcode readers.

E-Base™ Integrated Devices
E-PAGE™ 96 gels run in the specially designed E-Base™ electrophoresis bases, which combine the base and the power source in one device. Two types of bases are available from Invitrogen:
1. The mother E-Base™ device contains an electrical plug that can be connected directly to an electrical outlet and is used for electrophoresis of one E-PAGE™ 96 gel
2. The daughter E-Base™ device connects to the mother E-Base™ (Figure 5) and to other daughter E-Base™ devices for the simultaneous electrophoresis of two or more E-PAGE™ 96 gels. The daughter base does not contain an electrical plug and cannot be used without a mother base

Each base has a power/program button and a timer button on the lower right side of the base for controlling your electrophoresis run. The lower left side of each base contains a lighted LED and a digital timer display (00-99) that indicates where your gel is in the running process. Two programs are pre-set in the E-Base™ units: a 14-minute protein run program for E-PAGE™ 96 gels and a 12-minute DNA program for running E-Gel® 96 Gels. For E-Gel® 48 Gels, use the DNA program extended to 20 minutes due to the longer running distance.

Note: The E-Base™ can run either E-Gel® 96, E-Gel® 48, or E-PAGE™ 96 systems. The E-PAGE™ 96 gel is not compatible with current models of the E-Gel® 96 bases (mother and daughter bases).

E-Holder™ platform
The E-Holder™ platform is compatible in size with standard automated systems for convenient loading of samples in a hands-free robot environment when the use of the E-Base™ devices is not practical or while in queue for its availability.

E-Editor™ 2.0 Software
Analysis of E-PAGE™ 96 gel results is fast and convenient, for both stained gels and blots, using the Window®-based E-Editor™ 2.0 software. All 96 lanes (and the additional 8 marker lanes) are grouped and aligned into one image, for easy interpretation and comparison. Moreover, when 384-well assays are performed, the E-Editor™ program allows selection of multiple automated loading patterns and grouping of four different E-PAGE™ 96 gel results into one integrated image. This enables an immediate reference back from the gel or blot lane into the coordinates of the originating plate well to provide quick identification of important results.

NativePAGE™ Cathode Buffer Additive (20X) (Invitrogen™)

NativePAGE™ Cathode Buffer Additive (20X) is added to the NativePAGE™ Running Buffer and the resulting buffer is used in the cathode chamber of an XCell SureLock® Mini Cell for running NativePAGE™ Gels.

NativePAGE™ Sample Prep Kit (Invitrogen™)

The NativePAGE™ Sample Prep Kit includes sample preparation reagents for native gel electrophoresis. The kit includes two ready-to-use detergent solutions, 10% DDM (n-dodecyl-β-D-maltoside) and 5% Digitonin, which improve the solubility of hydrophobic and membrane proteins during sample preparation.

The samples prepared with 10% DDM, 5% Digitonin, or the NativePAGE™ Sample Prep Kit are compatible with NativePAGE™ Novex Bis-Tris Gels for native electrophoresis, showing increased resolution and reduced streaking.

Novex™ Tris-Glycine Transfer Buffer (25X) (Invitrogen™)

Novex Tris-Glycine Transfer Buffer (25X) is optimized for western blot transfer of proteins to nitrocellulose, PVDF, or nylon membranes for subsequent analysis using Tris-Glycine gels.

To use: This buffer should be diluted to a 1X solution with a water/methanol mixture to yield a final methanol concentration of 20% for optimal results.

See all available buffers and reagents available for SDS-PAGE

Novex™ Tricine SDS Buffer Kit, includes LC1676 & LC1675 (Invitrogen™)

The Novex Tricine SDS Buffer Kit is designed for separation of small- to medium-size proteins on tricine gels. This kit includes the following buffers:
• Tricine SDS Sample Buffer (Cat. No. LC1676)
• Novex Tricine SDS Running Buffer (Cat. No. LC1675)

See all buffers and reagents for SDS-PAGE ›

Pierce™ SDS-PAGE Sample Prep Kit (Thermo Scientific™)

The Thermo Scientific Pierce SDS-PAGE Sample Prep Kit quickly and easily removes high levels of salts, denaturants, detergents and other buffer components that interfere with polyacrylamide gel electrophoresis of proteins.

Features of the SDS-PAGE Sample Prep Kit:

Eliminates gel artifacts caused by incompatible contaminants—removes dyes, reducing agents, detergents, sugars, glycerol, guanidine, urea and ammonium sulfate to provide reproducible results by SDS-PAGE analysis
Compatible with the BCA protein assay—allows protein quantitation of the processed sample before gel-loading
Enriches dilute protein solutions—concentrates protein samples for SDS-PAGE analysis by six-fold in less than 20 minutes
Powerful and flexible—process 2 to 350 µL of sample containing up to 70 µg of protein; recover 75 to 85% of the total protein in 50 µL of elution buffer
Convenient, complete kit—includes PAGEprep Resin, DMSO, spin cups and sample loading buffer

The SDS-PAGE Sample Prep Kit provides a simple and effective method for concentrating samples while removing chemicals that interfere with SDS-PAGE analysis, such as acids and bases, detergents, guanidine and ammonium sulfate. The proprietary PAGE-prep Resin binds protein in the presence of dimethylsulfoxide (DMSO). Interfering contaminants are then removed by washing the protein-bound resin in an easy-to-use spin cup format. Proteins are eluted in a buffer compatible with the Pierce BCA Protein Assay, allowing quantitation of a portion of the processed sample. The eluted proteins can then be combined with sample buffer and analyzed on the SDS-PAGE system of choice.

Includes:
• PAGEprep resin slurry, DMSO solution, elution buffer, sample buffer, spin cups and collection tubes

Applications:
• Inclusion bodies solubilized in guanidine·HCl
• Samples containing low-pH buffers, thiocyanates or urea
• Proteins precipitated in ammonium sulfate
• Concentration of dilute protein solutions

The SDS-PAGE Sample Prep Kit uses a unique resin composed of modified diatomaceous earth that binds protein in the presence of DMSO. The simple protocol involves combining 2 to 350 µL of sample, containing up to 70 µg of protein, with 20 µL of the PAGEprep Resin in DMSO (supplied). Proteins in the sample bind to the resin in 3 to 5 minutes, after which the nonbound contaminating chemicals are washed away. Finally, the purified proteins are recovered from the resin in 50 µL of Elution Buffer. The recovered protein sample is then ready to mix with the supplied 5X Sample Loading Buffer for gel loading (or another sample loading buffer). The procedure also allows for dilute protein samples to be concentrated up to six-fold, enabling more protein to be loaded per well. In addition, the Thermo Scientific Pierce BCA Protein Assay (Part No. 23225) is compatible with the Elution Buffer and may be used to determine final protein concentration before gel loading.

For reliable SDS-PAGE analysis, protein samples must be prepared in a buffer free of interfering substances and at protein concentrations adequate for analysis. Many interfering substances, which interfere with typical sample buffers for polyacrylamide gel electrophoresis (SDS-PAGE), are difficult to remove by traditional sample preparation methods. For example, protein samples containing 6M guanidine-HCl will precipitate when mixed with Laemmli buffer for SDS-PAGE, causing the sample to run poorly on a gel. Fortunately, samples containing a wide range of interfering chemicals, such as chaotropic agents, detergents, lipids, pH extremes and salts, can be cleaned up within minutes using the SDS-PAGE Sample Prep Kit.

Related Products
Pierce™ SDS-PAGE Sample Prep Kit

Novex™ Tris-Glycine Native Sample Buffer (2X) (Invitrogen™)

Novex Tris-Glycine Native Sample Buffer (2X) is designed for protein gel electrophoresis under native running conditions with Tris-Glycine gels or Tris-Acetate gels. It has a pH of 8.6 and contains bromophenol blue as a tracking dye.

See all available buffers and reagents available for Native-PAGE

NativePAGE™ Running Buffer (20X) (Invitrogen™)

NativePAGE™ Running Buffer (20X) is used to make the NativePAGE™ Cathode and Anode Running Buffers for use with an XCell SureLock® Mini Cell when running NativePAGE™ Gels.

Novex™ Tris-Glycine SDS Buffer Kit (Invitrogen™)

Pre-mixed buffers are a convenient way to ensure high-quality, consistent electrophoresis results. All buffers are made with high-purity reagents and are strictly quality controlled. The buffers are provided as a concentrated solution requiring a simple dilution with deionized water before use.

Novex™ Tricine SDS Sample Buffer (2X) (Invitrogen™)

Novex Tricine SDS Sample Buffer (2X) is used to prepare protein samples for denaturing gel electrophoresis using tricine gels. Novex Tricine SDS Sample Buffer is specifically formulated for optimal electrophoresis of small proteins and peptides. The sample buffer is formulated with Coomassie Blue G and Phenol Red as tracking dyes instead of bromophenol blue. Coomassie Blue G gives a sharp dye front with Tricine SDS running buffers and migrates much closer to the moving ion front than bromophenol blue. Bromophenol blue runs more slowly than some peptides. This ensures that small peptides do not run off the gels.

To use: Heat the sample in a 1X dilution (reduced or non-reduced) at 85°C for 2 minutes for optimal results.

Recommended buffers: Use tricine running buffers with tricine sample buffers to obtain the benefits of this gel system.

See all buffers and reagents for SDS-PAGE ›

Novex™ Tris-Glycine Native Running Buffer (10X) (Invitrogen™)

Novex Tris-Glycine Native Running Buffer (10X) is designed for protein gel electrophoresis under native running conditions with Tris-Glycine gels or Tris-Acetate gels.

Separate native or denatured proteins
Novex Tris-Glycine gels do not contain SDS and can be used to accurately separate both native and denatured proteins, depending upon the sample and running buffers used. To separate denatured proteins on Novex Tris-Glycine gels, use Novex Tris-Glycine SDS Sample Buffer and Novex Tris-Glycine SDS Running Buffer. To separate native proteins use Novex Tris-Glycine Native Sample Buffer and Novex Tris-Glycine Native Running Buffer.

See all available buffers and reagents available for Native-PAGE

Novex™ Tris-Glycine SDS Sample Buffer (2X) (Invitrogen™)

Novex Tris-Glycine SDS Sample Buffer (2X) is used to prepare protein samples for denaturing gel electrophoresis using Tris-Glycine gels. It has a pH of 6.8 and contains bromophenol blue as a tracking dye.

See all available buffers and reagents available for SDS-PAGE

To use: Heat the sample in a 1X dilution (reduced or non-reduced) at 85°C for 2–5 minutes for optimal results. Heating samples at 100°C in SDS-containing buffers results in proteolysis.

Pierce™ Lane Marker Non-Reducing Sample Buffer (Thermo Scientific™)

Thermo Scientific Pierce Lane Marker Non-Reducing Sample Buffer is a ready-to-use 5X SDS-PAGE sample loading buffer in a non-reducing formulation, with a pink dye buffer-front marker.

Features of Lane Marker Sample Buffer:

Easy to see—bright pink dye marks the buffer front, clearly indicating the progress of the electrophoresis run
Concentrated—5X stocks enable a greater range of protein sample volumes to be used for electrophoresis
Transferable marker dye—pink dye transfers with protein to nitrocellulose membrane, enabling verification of transfer direction and orientation of the blot

Lane Marker Non-Reducing Sample Buffer is convenient and ready to use for SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting. Formulated as a 5X stock rather than the traditional 2X stock, it enables a larger volume of protein solution to be included in the sample that is loaded in each well. Particularly unique in this buffer is the use of a bright pink tracking dye instead of the traditional bromophenol blue dye. This pink dye marks not only the dye front in the gel but also transfers and permanently binds to nitrocellulose membranes. Consequently, the dye can be used to assess transfer efficiency and align cut membranes.

Lane Marker Sample Buffer is easy to use. Simply mix one part Sample Buffer with four parts protein sample, heat denature, and then load the gel sample wells. Visualize progress of the electrophoresis run by monitoring the location of the pink dye front. Lane Marker Sample Buffer may be used in denaturing gels of all kinds and is compatible with coomassie dye and silver staining techniques, as well as Western blotting procedures.

Note: This product is not compatible with fluorescent detection systems. (The pink tracking dye fluoresces strongly.)

Related Products
Pierce™ Lane Marker Reducing Sample Buffer

Pierce™ Lane Marker Reducing Sample Buffer (Thermo Scientific™)

Thermo Scientific Pierce Lane Marker Reducing Sample Buffer is a ready-to-use 5X SDS-PAGE sample loading buffer in a reducing formulation, with a pink dye buffer-front marker. This Sample Buffer contains DTT as the reducing agent, eliminating the strong odor associated with mercaptoethanol-containing buffers.

Features of Lane Marker Sample Buffer:

Easy to see—bright pink dye marks the buffer front, clearly indicating the progress of the electrophoresis run
Concentrated—5X stocks enable a greater range of protein sample volumes to be used for electrophoresis
Transferable marker dye—pink dye transfers with protein to nitrocellulose membrane, enabling verification of transfer direction and orientation of the blot

Lane Marker Reducing Sample Buffer is convenient and ready to use for SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting. Formulated as a 5X stock rather than the traditional 2X stock, it enables a larger volume of protein solution to be included in the sample that is loaded in each well. Particularly unique in this buffer is the use of a bright pink tracking dye instead of the traditional bromophenol blue dye. This pink dye marks not only the dye front in the gel but also transfers and permanently binds to nitrocellulose membranes. Consequently, the dye can be used to assess transfer efficiency and align cut membranes.

Lane Marker Sample Buffer is easy to use. Simply mix one part Sample Buffer with four parts protein sample, heat denature, and then load the gel sample wells. Visualize progress of the electrophoresis run by monitoring the location of the pink dye front. Lane Marker Sample Buffer may be used in denaturing gels of all kinds and is compatible with coomassie dye and silver staining techniques, as well as Western blotting procedures.

Note: This product is not compatible with fluorescent detection systems. (The pink tracking dye fluoresces strongly.)

Related Products
Pierce™ Lane Marker Non-Reducing Sample Buffer