Bio-Rad Protein Assay Kit I #5000001



Colorimetric assay kit, includes 450 ml dye reagent concentrate, bovine γ-globulin standard; for 440 standard assays or 2,200 microplate assays
Safety Data Sheet

Safety Data Sheet



Choose the Bio-Rad Protein Assay for simple, accurate measurement of total protein. This colorimetric assay based on the Bradford method is compatible with many common lab reagents.

Flexible assay formats:

  • Use the standard assay for protein concentrations between 200 and 1,400 µg/ml (20–140 µg total protein)
  • Use the low-concentration assay for protein concentrations < 25 µg/ml (1–20 µg total protein)
  • Use 96-well microplates for rapid assays

Product Options

Protein Assay Standard Catalog Number
Bio-Rad Protein Assay Kit I   Bovine γ-globulin (BGG) 5000001
Bio-Rad Protein Assay Kit II   Bovine serum albumin (BSA) 5000002
Dye Reagent Concentrate Refill
  ––– 5000006

See the Bio-Rad Protein Assay product page for individual protein standards, documentation, and more information.

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Supporting Documents

Online Resources

Bradford MM (1976). A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal Biochem 72, 248–254. PMID: 942051