BSA-Heat Shock pH 7.0, Diagnostic Grade, 5 g. Bovine Serum Albumin-Heat Shock, Diagnostic Grade, pH: 7.0 +/- 0.5, Purity: greater than or equal to 98% (SDS-PAGE), Molecular weight: 66.43 kDa, Moisture: less than or equal to 5.0%, Ash: less than/equal to 3%, Form: Off-white to tan powder, Size: 5 g