For purification of this Albumin an extensive heat-shock/diafiltration method is used, which has been shown to bring more highly purified products than the standard process acc. to Cohn. The process is taking place in a closed system. Molar extinction coefficient: 4,4x10 4 L x mol -1 x cm -1 (acc. to 0,667 L x mol -1 x cm -1 for a 0,1 % solution). Bovine Serum Albumin (BSA) Fraction V, US-Origin ≥98 %, protease-free High purity albumin with origin from the USA with very low protease content. Excellent in sensitive immuno assays, as a stabilising reagent for proteins, enzymes and antibodies and also suitable as a blocking reagent in hybridisation techniques. Tested for the absence of detectable protease activity.