Bio Basic Asia Pacific Pte Ltd

Optimized Lowry Protein Assay Kit

Catalog Number: BPA10602
Availability: In Stock
SGD 250.00

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Lowry Protein Assay Kit is commonly used for protein quantification. Under alkaline conditions, the proteins react with copper to form protein copper complex that reduces phosphomolybdic acid phosphotungstic acid reagent (Folin Phenol Reagent), producing a dark blue complex. It is a mixture of phosphomolybdic blue and phosphotungstic blue. The dark blue complex has an absorbance of 745-750nm.

This optimized kit uses an improved ready to use Optimized Basic Copper Reagent, making the whole experimental flow more convenient. Additionally, the dark blue complex generated by the reaction can sit out for at least 2 hours without being degraded.

This method sensitivity is 100 times higher than of Biuret Assay.

The UV-Visible Spectrophotometry can be used to perform 100 assays 

The Microplate method can be used to perform 1000 assays

Product Code:


Pack Content(s):

Optimized Basic Copper Reagent – 100ml

BSA Standard Protein (1mg/ml) – 5ml

Folin Phenol Reagent (1N) – 10ml


Store Folin Phenol Reagent & Optimized Basic Copper Reagent at 4oC in the dark

Store BSA Standard protein at -20oC.

This kit has a shelf-life of 2 years


This reagent kit is intended solely for in vitro experiments and is not suitable for clinical, therapeutic, or in vivo experiments involving animals