How do I convert the concentration (mg/mL) of Dispase II I currently use into FITC-BSA Units/mL reported by VitaCyte?

The DispaseTM II product is a cruder preparation of neutral protease than our CIzyme™ BP protease, but both originate from Paenibacillus polymyxa fermentations . The FITC-BSA specific activity of the Dispase II product is less than 10% that of our CIzyme™ BP Protease and can vary dramatically between lots. To substitute CIzyme™ BP Protease for Dispase II, a good rule of thumb is to replace Dispase II targeted at 1.0 mg/mL with 5,000 FITC-BSA Units/mL (roughly 30 µg/mL CIzyme™ BP Protease).