Type III-S, ammonium sulfate suspension, ≥4,000 units/mg protein

Type I, ammonium sulfate suspension, ~10,000 units/mg protein

Type X, lyophilized powder, ≥3,500 units/mg protein

≥350 U/g

Type I, partially purified powder, ≥40 units/mg protein (biuret)

recombinant, expressed in E. coli, ammonium sulfate suspension, ≥50 units/mg protein

for use with Fructose Assay Kit FA-20

Type III, ammonium sulfate suspension, ≥400 units/mg protein (biuret)