Shop All Immunoassay Buffers & Reagents

Ethylene Glycol (Thermo Scientific™)

Thermo Scientific Pierce Ethylene Glycol Solution provides exceptional antifreeze protection and storage stability for antibody-enzyme conjugates because it is purified to remove impurities commonly found traditional glycerol stocks.

Features of Ethylene Glycol:

• Specially purified to remove impurities such as aldehydes, peroxides, iron and UV absorbing hydrocarbons
• Suitable for enzyme storage without the worry of losing enzymatic activity
• Stable for months

This product is a 50% (w/v) aqueous solution of highly purified ethylene glycol. When mixed in equal volume with purified protein samples, such as primary antibodies, the solution stabilizes and maintains the mixture as a liquid during freezer storage (-20°). Ethylene glycol is a suitable alternative to glycerol for most protein-storage applications. In fact, this preparation of ethylene glycol is devoid of various common glycerol impurities and potiential degradation products that are damaging to certain enzymes.

SuperBlock™ (PBS) Blocking Buffer (Thermo Scientific™)

SuperBlock Blocking Buffer is an optimized solution containing a single purified glycoprotein that provides incredibly fast and effective blocking for ELISA, IHC, and western blot analysis.

Compare and view all available blocking buffers

Features of SuperBlock Blocking Buffer:
Blocking time—block membranes in 5 to 10 minutes and ELISA plates in 2 minutes
Applications—ELISA, western blotting, IHC; biotin-free for use with streptavidin system
Stability—store buffer at 4°C for one year; store blocked plates dry for up to 12 months

Blocking micro-plates, membranes or tissues with a SuperBlock Buffer yields a high signal-to-noise ratio in most detection systems. The protein-based formulation does not contain any immunoglobulins, albumin, or endogenous biotin, making it compatible in many situations where traditional blocking agents fail. The buffer is especially effective at blocking coated polystyrene microplates (96-well plates) and stabilizing them for drying and storage for later use.

Related products
SuperBlock T20 (PBS) Blocking Buffer
SuperBlock (TBS) Blocking Buffer
SuperBlock T20 (TBS) Blocking Buffer
SuperBlock (TBS) Blocking Buffer Dry Blend

Coating Buffer A

The Invitrogen Coating Buffer A is intended for use with Invitrogen Antibody Pairs as part of the recommended assay procedure.

HRP-Conjugate Diluent/Stabilizer (Invitrogen™)

This product may be used as a conjugate diluent in enzyme immunoassays.

Miser™ Antibody Extender Solution NC (Thermo Scientific™)

Thermo Scientific Pierce Antibody Extender Solution NC is a post-transfer nitrocellulose membrane-treatment reagent that enables Western blot detection with much less primary antibody.

Features of Antibody Extender Solution NC:

Achieve equivalent signal—use at least three times less primary antibody than normal and retain comparable or better signal detectability
Any detection mode or enzyme—the method works with both colorimetric and chemiluminescent detection modes and with horseradish peroxidase (HRP) and alkaline phosphatase (AP) systems
Easy-to-perform, 10-minute protocol—invest a few minutes and save money on your primary antibody; our scientists have reduced their use of expensive primary antibodies by up to 100-fold with this product

By treating nitrocellulose membranes for a few minutes in this reagent immediately after transfer and before probing, you can use much less (more dilute) primary antibody solutions while obtaining the same level of detection. This conserves use of expensive and rare antibodies, enabling more experiments to be performed with the same amount of antibody. The reagent is so effective that our scientists have observed antibody cost reductions of 10-, 25- and even 100-times (depending on the antigen and primary antibody directed against that antigen).

Wash Buffer (25X)

Wash buffer can be used for all ELISA assays.

Peroxidase Suppressor (Thermo Scientific™)

Thermo Scientific Pierce Peroxidase Suppressor is a stable, easy-to-use inhibitor of endogenous peroxidase activity from cells and tissues to reduce background signal in HRP-based immunohistochemistry applications.

Features of Peroxidase Suppressor:

• Stable
• One component
• Ready-to-use
• Effectively inhibits peroxidase activity without interfering with antigen-antibody
interactions

This peroxidase suppressor is optimized for immunohistochemical applications. The Peroxidase Suppressor is a stable, easy-to-use inhibitor of endogenous peroxidase activity. This proprietary formulation is the most effective peroxidase inhibitor available. The immunoperoxidase method is a commonly used detection method for immunostaining of cells and tissues. However, the analysis often is complicated by the presence of endogenous peroxidase and "pseudoperoxidase" activity in the cells and tissues. This presence results in nonspecific staining when a substrate such as diaminobenzidine (DAB) is present. Nonspecific staining is difficult to distinguish from the immunochemical marker, making it difficult to distinguish the final location of the antigen of interest. The typical method of inhibiting endogenous peroxidase activity involves hydrogen peroxide or hydrogen peroxide in methanol. The peroxidase suppressor inhibits peroxidase activity even more effectively than the method using hydrogen peroxide in methanol. Plus, the Peroxidase Suppressor does not affect antibody activity (see figure). Peroxidase Suppressor also can be used on blots of whole cell supernatant prior to the addition of the horseradish peroxidase (HRP) marker.

eBioscience™ IHC/ICC Blocking Buffer - High Protein (Invitrogen™)

The IHC/ICC Blocking Buffer- High Protein is designed for use in immunohistochemistry and immunocytochemistry protocols which require blocking of non-specific binding sites. This blocking buffer is recommended for tissues and antibodies with high background staining, nuclear antigens, and FFPE tissue. This blocking buffer can be used both in the blocking step and as a diluent for primary and secondary antibodies during antibody incubation steps. The IHC/ICC Blocking Buffer-High Protein is compatible with organic dye-conjugated antibodies as well as unconjugated antibodies that may be used in two and three step staining protocols. This buffer is supplied as a 1X stock solution.

Reported Application
Immunohistochemical Staining, Immunocytochemistry, Immunohistochemical Staining of Frozen Tissue Sections, Immunohistochemical Staining of Formalin-Fixed Paraffin Embedded Tissue Sections

Assay Buffer (5X) (Invitrogen™)

Assay Buffer (5x) for Antibody Pairs is intended to be used as a:(1) blocking reagent for ELISA plates(2) diluent for ELISA standards and samples(3) diluent for the detection antibody(4) diluent for the HRP conjugate

Application: Antibody pairs (ELISA)

InstantOne ELISA Wash Buffer (10X) (Invitrogen™)

The InstantOne ELISA Wash Buffer (10X) is developed for use with the InstantOne ELISA Cell Signaling assays. The InstantOne ELISA Wash Buffer is supplied as a 10X concentrate and is used for washing the InstantOne ELISA cell signaling assay microplate. It is a simple mix of buffers, salts, and mild detergent. If washing wells with a microplate washer, use 3x washes with a 10 second mixing cycle.
The InstantOne ELISA Wash Buffer (10X) is included with every InstantOne ELISA sold. This wash buffer is offered additionally as a stand-alone item in cases where experimental procedures and/or automation require much higher volumes of wash buffer.

Reported Application
ELISA

Wash Solution Concentrate (20X), 15 ml (Invitrogen™)

Wash Solution Concentrate (20X) (contains 0.1% sodium azide) is used to carry out procedures with Luminex® multiplex panels. Wash Solution Concentrate (20X) is designed to meet the additional solution volume often needed when protocols are carried out using an automated system. Please refer to the manual provided with each kit for details on the use of the Wash Solution Concentrate (20X).

Magnetic Beads Let You Do More with Your Time
Luminex® multiplex panels are built on both polystyrene and magnetic beads and assays for both require the use of Wash Solution Concentrate (20X) as part of their protocols. Magnetic bead-based assays enable automation, help decrease hands-on time, and increase throughput and precision. Using the fast and easy Luminex® protocols, you can get your results in as little as 3.5 hours.

For research use only. Not intended for human or animal therapeutic or diagnostic use.

eBioscience™ IHC /ICC Blocking Buffer - Low Protein (Invitrogen™)

The IHC/ICC Blocking Buffer- Low Protein is designed for use in immunohistochemistry and immunocytochemistry protocols which require blocking of non-specific binding sites. This blocking buffer is recommended for tissues and antibodies with average levels of background staining. This blocking buffer can be used both in the blocking step and as a diluent for unconjugated antibodies and organic dye-conjugated antibodies during the antibody incubation step. This buffer is supplied as a 1X stock solution containing sodium azide.

Reported Application
Immunohistochemical Staining, Immunocytochemistry, Immunohistochemical Staining of Frozen Tissue Sections, Immunohistochemical Staining of Formalin-Fixed Paraffin Embedded Tissue Sections

eBioscience™ ELISA/ELISPOT Diluent (5X) (Invitrogen™)

The 5X ELISA/ELISPOT Diluent is a Phosphate Buffered Solution supplemented with fetal bovine serum as a source of animal serum proteins. This buffer is used for blocking non-specific binding of ELISA plates, diluting recombinant standards and test samples, and making the working dilutions of the secondary detection reagent (i.e., detection antibody-biotin and AV-HRP Cat. No. 18-4100). This diluent solution also contains a preservative.

Reported Application
ELISA

CellVue Diluent C (For CellVue™ Cell Labeling Kits) (Invitrogen™)

Diluent C is the Buffer required for the dilution of the dyes in the CellVue™ Cell Labeling Kits. Please refer to the specific labeling kit for instructions of use.

Reported Application
Flow Cytometric Analysis, Microscopy

InstantOne ELISA Cell Lysis Buffer (5X) (Invitrogen™)

Cell Lysis Buffer (5X) is included in the InstantOne ELISA kits. The solution is offered individually as some lab protocols require addition buffers.
Cell Lysis Buffer(5X) is used along with Enhancer Solution (Cat. No. IOES1) to make the Cell Lysis mixed used in the InstantOne phospho ELISA kits. The Cell Lysis Buffer (5X) contains a combination of detergents, phosphatase inhibitors, salts, and buffers. The Cell Lysis Buffer (5X) is supplemented with Enhancer Solution to yield a versatile Cell Lysis Mix that can be applied to many cells and tissues. Please note the difference in names. Cell Lysis Mix is referred to heavily in the InstantOne phospho ELISA assay protocol.
A. The Cell Lysis Mix (5X) is used to lyse cells in the presence of culture medium and is typically used to lyse non-adherent cells.
B. The 1X Cell Lysis Mix is prepared by simply diluting Cell Lysis Mix (5X) (a mixture of the Cell Lysis Buffer (5X) and the Enhancer Solution) 5-fold with water. This buffer is used to lyse cells after the removal of culture medium, and is typically used to lyse adherent cells or non-adherent cells that have been harvested by centrifugation. Lysis Mix should be used as the diluent for any dilution of cellular lysates that are required.
NOTE: *Supplementing Cell Lysis Mix with extra components (e.g. protease inhibitors, chelating agents, detergents) should be tested on a case-by-case basis for compatibility with InstantOne ELISA assays.

Reported Application
ELISA