lyophilized powder, 40-300 NIH units/mg protein (biuret)
lyophilized powder, ≥1,000 units/mg protein (biuret)
lyophilized powder, 600-2,000 NIH units/mg protein (biuret)
lyophilized powder, ≥2,000 NIH units/mg protein (E1%/280, 18.3)
lyophilized powder, ≥1,000 NIH units/mg protein (E1%/280, 18.3)
lyophilized powder, ≥2,000 NIH units/mg protein (E1%/280 = 19.5)
≥60 NIH units/mg protein (biuret)
lyophilized powder, ≥2,000 NIH units/mg protein (E1%/280 = 19.5)