Shop All Electrophoresis Reagents & Buffers

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

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

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

Agarose I (Molecular Biology Grade) (Thermo Scientific™)

Thermo Scientific Pierce Agaroses are highly purified and carefully blended formulations of regular- or low-melting agarose that provide uniform lot-to-lot consistency for preparation of electrophoresis gels.

Features:

• A regular melting temperature agarose for electrophoresis requiring an exceptional level of purity with unequaled performance

Related Products
Agarose II (Low Melt)

SureCast™ Resolving Buffer (Invitrogen™)

SureCast Resolving Buffer packs are pouches of dry blend powder each sufficient to make 500 mL of resolving gel buffer (1.5 M Tris buffer, pH 8.8) for hand-casting polyacrylamide gels. They are easy to use—simply empty the contents of one pouch into a beaker, add ultrapure water, and stir to dissolve.

See all gel casting reagents ›
Learn more about the SureCast Handcast system ›

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

UltraPure™ TAE Buffer, 10X (Invitrogen™)

UltraPure™ 10X TAE Buffer is a sterile-filtered solution of 400 mM Tris-acetate and 10 mM EDTA. TAE Buffer is the most commonly used buffer for agarose DNA electrophoresis. It is supplied in 1 L plastic bottles or in a 4 L stackable Cubitainer® Box. A 1X TAE Buffer solution contains 40 mM Tris-acetate and 1 mM EDTA at pH 8.3.

Performance and Quality Testing: No DNase activity detected.

UltraPure™ Low Melting Point Agarose (Invitrogen™)

UltraPure™ Low Melting Point Agarose is a polysaccharide used for size-based separation of nucleic acids in agarose gel electrophoresis applications. UltraPure™ Low Melting Point Agarose is ideal for resolving DNA and RNA fragments and for the recovery of nucleic acid fragments after electrophoresis, as it melts at 65.5°C (below the melting point of most nucleic acids). The solution remains fluid at 37°C and will set rapidly at temperatures below 25°C. Benefits of using UltraPure™ Low Melting Point Agarose:

• Ideal for analysis and recovery of DNA and RNA for routine applications
• Strong gel structure allows for better handling and less breakage
• Ideal for a variety of applications such as in-gel manipulation, tissue and cell culture, and viral plaque assays
• Can also be used in protein electrophoresis applications such as Ouchterlony (antigen-antibody interaction assay) and radial immunodiffusion (RID) (antigen quantitation assay)

Improved packaging
The new environmentally friendly packaging uses 75% less plastic than the original bottles (see figure). This means less energy and raw material used in manufacture, and less waste in landfills. Additionally, the easy-pour spout reduces the likelihood of spills and contamination.

Performance and quality testing
The performance of UltraPure™ Agarose is evaluated to satisfy specifications in appearance, moisture, gel strength, gelling temperature, melting temperature, sulfate content, electroendosmosis, and DNase/RNase assay.

Note: UltraPure™ Low Melting Point Agarose (Cat. No. 16520-100) is a replacement for the item previously sold under Cat. No. 15517-022.

North2South™ Hybridization Stringency Wash Buffer (2X) (Thermo Scientific™)

Thermo Scientific North2South Hybridization Stringency Wash Buffer (2X), for use with the North2South Chemiluminescent Hybridization and Detection Kit.

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North2South™ Chemiluminescent Hybridization and Detection Kit
North2South™ Chemiluminescent Substrate for HRP
North2South™ Hybridization Buffer

TBE Buffer (Tris-borate-EDTA) (10X) (Thermo Scientific™)

Thermo Scientific 10X TBE Buffer (Tris-borate-EDTA) is the most commonly used buffer for DNA and RNA polyacrylamide gel electrophoresis. TBE is used with non-denaturing or denaturing (7 M urea) gels. It is also routinely used for DNA automated sequencing gel. TBE can also be used for agarose gels, but is not recommended for preparative gels for recovery of nucleic acids. Since borate in TBE buffer is a strong inhibitor for many enzymes, TAE buffer (Tris Acetate-EDTA buffer, 10X powder, sc-296647) is recommended when looking at enzymatic applications for the DNA sample.

Applications

• Electrophoresis of nucleic acids in agarose and polyacrylamide gels
• Used both as a running buffer and as a gel preparation buffer
• Filtered through a 0.22 µm membrane
• Recommended for electrophoresis of RNA and DNA fragments smaller than 1500 bp

Note
Double-stranded linear nucleic acid molecules migrate about 10% slower in TBE buffer than in TAE buffer.

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.

TAE Buffer (Tris-acetate-EDTA) (50X) (Thermo Scientific™)

Thermo Scientific 50X TAE Buffer (Tris-acetate-EDTA) is used for electrophoresis of nucleic acids in agarose and polyacrylamide gels. You can use this buffer for both genomic and large supercoiled DNA, and you can also use this as both a running and a gel preparation buffer.

Applications

• Electrophoresis of nucleic acids in agarose and polyacrylamide gels
• Used both as a running buffer and as a gel preparation buffer
• Filtered through a 0.22 µm membrane
• Recommended for resolution of RNA and DNA fragments larger than 1500 bp, for genomic DNA and for large supercoiled DNA

Note
TAE buffer has a relatively low buffering capacity. Therefore, periodic replacement of the buffer during prolonged electrophoresis is recommended.

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.

NuPAGE™ Antioxidant (Invitrogen™)

NuPAGE Antioxidant prevents sample reoxidation and maintains proteins in a reduced state during protein gel electrophoresis and protein transfer. It is added to the running buffer when performing protein gel electrophoresis under reducing conditions. NuPAGE Antioxidant migrates with reduced proteins to maintain reducing conditions and to prevent reoxidation of sensitive amino acids such as methionine and tryptophan.

NuPAGE Antioxidant should be used with samples reduced using NuPAGE Sample Reducing Agent or other reducing agents. NuPAGE Antioxidant is optimized for the neutral pH of NuPAGE gels and is not compatible with other gel chemistries. It may also be added to NuPAGE Transfer Buffer to enhance transfer of proteins to membranes.

See all available buffers and reagents available for SDS-PAGE

Orange DNA Loading Dye (6X) (Thermo Scientific™)

Thermo Scientific 6X Orange Loading Dye is used to prepare DNA markers and samples for loading on agarose or polyacrylamide gels. It contains two different dyes (xylene cyanol FF and orange G) for visual tracking of DNA migration during electrophoresis. The presence of glycerol ensures that the DNA in the ladder and sample forms a layer at the bottom of the well. The EDTA included in the solutions binds divalent metal ions and inhibits metal-dependent nucleases.

6X Orange DNA Loading Dye is used for conventional DNA electrophoresis.

Highlights

• Two-color tracking of DNA migration during DNA electrophoresis
• No DNA masking during gel exposure to UV light
• EDTA binds divalent metal ions and inhibits metal dependent nucleases

Applications

• Analysis of small DNA molecules
• Preparation of DNA ladders, markers, and samples for loading on agarose or polyacrylamide gels