Azo-Casein (Sulphanilamide Dyed) (S-AZCAS)

Can your Azo-Casein (S-AZCAS) method be used to measure protease activity at pH values different from 7?
The Azo-Casein assay can be used at any pH from about 4.5 to 10 by simply selecting the required buffer. Product Page (S-AZCAS)
Wed, 23 Mar, 2016 at 1:04 PM
Can your Azo-Casein (S-AZCAS) be used to measure acid proteases at pH 5?
Yes. Azo-Casein can be used down to pH 4.5 if required.  It is best to first dissolve the Azo-Casein in water (2 grams per 90 mL) and then add concentrate...
Wed, 23 Mar, 2016 at 1:05 PM