BioReagent, ≥50 Kunitz units/mg protein, ≥80% (SDS-PAGE)

≥1,000 DEA units/mL, buffered aqueous glycerol solution, recombinant, expressed in proprietary host

buffered aqueous glycerol solution, ≥5,500 DEA units/mg protein

BioUltra, buffered aqueous glycerol solution, ≥6,500 DEA units/mg protein

≥10 units/mg solid (in glycine buffer)

buffered aqueous glycerol solution, 20-50 units/mg protein (in glycine buffer)

ammonium sulfate suspension, 30-90 units/mg protein (modified Warburg-Christian, in glycine buffer)

lyophilized powder, ≥100 DEA units/mg protein