ammonium sulfate suspension, 10-20 units/mg protein
lyophilized powder, ≥20 units/mg protein (biuret)
lyophilized powder, ≥0.20 unit/mg solid
ammonium sulfate suspension, ≥100 units/mg protein
soluble powder, 75-150 units/mg solid
For use as a marker in SDS-PAGE
lyophilized powder, ≥3,000 W-A units/mg protein
≥95% (SDS-PAGE), specific activity ≥3,500 W-A units/mg protein, lyophilized powder