lyophilized powder, 100-300 units/mg protein (biuret)
5-10 units/mg protein
powder, brown, >0.5 U/mg
≥50 U/g moist material
Grade I, lyophilized powder, ≥1500 units/mg protein
Grade II, salt-free, lyophilized powder, 500-1,500 units/mg protein
Grade V, lyophilized powder, 50-200 units/mg protein
lyophilized powder, ≥100 units/mg protein