Block Ace Powder: blocking reagent for immunological experiments. Block Ace is a blocking agent prepared from bovine milk proteins (lactoprotein). Since lactoprotein contains a lot of hydrophobic groups, it shows a high affinity to plastic, membrane filter, etc. Block Ace exhibits a superior blocking effect on nonspecific adsorption of antigens or antibodies in ELISA, RIA and immunoblocking methods compared with conventional blocking agents such as BSA (Bovine Serum Albumin). FEATURES: Since Block Ace has high blocking effects and maintains the background at a low level, it is useful for low-concentration measurement such as ELISA. Block Ave is heat-treated and thus bovine-derived antibodies, enzymes and viruses are inactivated. Block Ace is stable for heat and freezing. It can stabilize physiologically active substances and can be used as a diluting agent. Block Ace can be rapidly dissolved in water. MANUFACTURER: KAC Co., Ltd., Kyoto-city 603-8432, Japan.