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Ig Isotype Control Cocktail - B

BD Pharmingen™ Ig Isotype Control Cocktail - B

Product Details
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BD Pharmingen™
Flow cytometry (Tested During Development)


The Isotype Control Cocktail B is a mixture of Mouse IgG1, Mouse IgG2a, and Mouse IgM designed and optimized to work in conjunction with the Rat T Lymphocyte Cocktail (Cat. No. 558493).  The Mouse IgM G155-228 is a monoclonal antibody specific for trinitrophenol (TNP), a hapten not expressed on mammalian cells.  The Mouse IgG2a G155-178 antibody was developed against TNP as well, but has unknown specificity.  The Mouse IgG1 MOPC-21 immunoglobulin is a mouse myeloma protein. All immunoglobulins were selected as isotype controls following screening for low background on a variety of mouse and human tissues.

Preparation And Storage

Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to the dye under optimum conditions and unconjugated antibody and free dye were removed.

Recommended Assay Procedures

BD® CompBeads can be used as surrogates to assess fluorescence spillover (compensation).  When fluorochrome conjugated antibodies are bound to BD® CompBeads, they have spectral properties very similar to cells.   However, for some fluorochromes there can be small differences in spectral emissions compared to cells, resulting in spillover values that differ when compared to biological controls.  It is strongly recommended that when using a reagent for the first time, users compare the spillover on cell and BD® CompBeads to ensure that BD® CompBeads are appropriate for your specific cellular application.

Product Notices

  1. This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
  2. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
  3. An isotype control should be used at the same concentration as the antibody of interest.
  4. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  5. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at
  6. This APC-conjugated reagent can be used in any flow cytometer equipped with a dye, HeNe, or red diode laser.
  7. Please refer to for technical protocols.
  8. Please refer to to access safety data sheets (SDS).
558508 Rev. 3
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Description Quantity/Size Part Number EntrezGene ID
APC mIgM      N/A 51-590-03089 N/A
PE Mouse IgG2a, κ Isotype Control N/A 51-550-33035 N/A
FITC mIgG1 N/A 51-540-20604 N/A
558508 Rev. 3
Citations & References
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Development References (1)

  1. Prussin C, Metcalfe DD. Detection of intracytoplasmic cytokine using flow cytometry and directly conjugated anti-cytokine antibodies. J Immunol Methods. 1995; 188(1):117-128. (Methodology). View Reference
558508 Rev. 3

Please refer to Support Documents for Quality Certificates

Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described

Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

For Research Use Only. Not for use in diagnostic or therapeutic procedures.