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New Era for Protein Quantitation is here!

Superior sensitivity, ease of use, high tolerance of contaminants, high-throughput, all the features you have been waiting for.
Assay Abs/Em (nm) Sensitivity and Range Speed Through-put Compatible with:
Quant-iT™ 485/590 250 ng – 5 ug 5 min High
  • Reducing agents
  • Amines
EZQ 450/620 20 ng – 5 ug 1 hr Medium
  • Reducing agents
  • Detergents
  • Ampholytes
  • Chaotropes
  • Amines
Nano-Orange 485/590 20 ng – 2 µg 30 min Medium
  • Reducing agents
  • Amines
CBQCA 450/550 10 ng – 150 µg 1 hr High
  • Reducing agents
  • Amines
Fluoresc-amine 390/475 60 ng – 2.5 µg 1 hr High
  • Detergents
OPA 340/455 40 ng – 5 µg 1 hr High
  • Detergents
Bradford 595/--- 20 µg - 300 µg 10 min High
  • Reducing agents
  •  
  • Detergents
  • Chaotropes
  • Amines
BCA 562/--- 0.4 µg – 8 µg 2.5 hr Medium
  • Detergents
  • Chaotropes
  • Amines
Lowry 750/--- 200 ng – 300 µg 40 min Low
UV absorption 205/280 2.8 µg – 420 µg


RediPlate EZQ™ Protein Quantitation Kits
The most sensitive protein quantitation assay that is not affected by contaminants, esp. DTT and detergents.

Our RediPlate EZQ™ Protein Quantitation Kit is a solid-phase, fluorescence-based protein assay that facilitates fast quantitation of protein samples prepared for gel electrophoresis. The assay can be performed in the presence of detergents, urea and reducing agents — simply spot 1 µL of your protein sample onto the prepared paper, stain with our proprietary fluorescent dye, and read the fluorescence. Samples are quantitated by comparison with a standard curve.




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Quant-iT™ Protein Assay Kit
The fastest and easiest protein quantitation assay, ideal for high-throughput quantitation

The Quant-iT™ Protein Assay Kit makes protein quantitation easy and accurate. The kit provides concentrated assay reagent, dilution buffer, and pre-diluted BSA standards. Simply dilute the reagent, load it into the wells of a microplate, add 1-20 µL of sample, mix, then measure the fluorescence. The assay is highly selective for protein and exhibits very little protein-to-protein variation. The assay is performed at room temperature, and the signal is stable for 3 hours. Common contaminants, such as salts, solvents, or DNA—but not detergents—are well tolerated in the assay

Quant-iT™ Protein Assay Kit
This fluorescence-based protein assay is easier and more sensitive than standard absorbance-based assays (for sample concentrations from 12.5 µg/mL to 5 mg/mL)
  • Quantitates proteins from 0.25 µg to 5 µg
  • Signal is unaffected by many common contaminants*, including DTT, ß-mercaptoethanol, amino acids, and DNA
  • Little protein-to-protein difference in signal
  • Signal is stable for 3 hours
  • Not compatible with detergents



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Related Products:
  • Qubit™ Quantitation Platform
  • Quant-iT™ DNA Assay Kits (Q33120, Q33130)
  • Quant-iT™ RNA Assay Kit (Q33140)