Solution of 50% glycerol, 10mM Tris-HCL pH 8.0

Type I-A, powder, ≥60% RNase A basis (SDS-PAGE), ≥50 Kunitz units/mg protein

Type II-A, ≥60% (SDS-PAGE), 50-150 Kunitz units/mg solid

Type III-A, ≥85% RNase A basis (SDS-PAGE), 85-140 Kunitz units/mg protein

Type X-A, ≥90% (SDS-PAGE), ≥80 Kunitz units/mg protein

Type XII-A, ≥90% (SDS-PAGE), 75-125 Kunitz units/mg protein

Type I-AS, 50-100 Kunitz units/mg protein

for molecular biology, ≥70 Kunitz units/mg protein, lyophilized