FAQ: What is the activity if Proteinase K, Molecular Biology Grade if subjected to the unit definition assay used for Thermolabile Proteinase K?

Proteinase K, Molecular Biology Grade yields an activity concentration of 800 U/mL using the traditional denatured hemoglobin activity assay. The same sample yields an activity concentration of ~4,000 U/mL using the more modern nitroanilide substrate visible absorbance activity assay that is used for Thermolabile Proteinase K.