biovision K773-100 Cell and tissue culture supernatants, urine, plasma and serum, as well as many other biological fluids, growth medium, food, etc. ? Detection method- Absorbance (570 nm) or Fluorescence (Ex/Em 535/587 nm) ? Species reactivity- Mammalian ? Applications- The kit detects high pico-unit of catalase in samples. Catalase Activity Assay Kit: High-Throughput Colorimetric & Fluorometric Assay for detecting Catalase Activity in Cells, Tissue, Erythrocytes etc. Simple, Direct, Highly Sensitive. Detection Limit: 1 μU or less. 100 Assays. Catalase (EC 1.11.1.6) is a ubiquitous antioxidant enzyme that is present in nearly all living organisms. It functions to catalyze the decomposition of hydrogen peroxide (H?O?) to water and oxygen. BioVision’s Catalase Assay Kit provides a highly sensitive, simple, direct and HTS-ready assay for measuring Catalase activity in biological samples. In the assay, catalase first reacts with H?O? to produce water and oxygen, the unconverted H?O? reacts with OxiRed? probe to produce a product, which can be measured at 570 nm (Colorimetric method) or at Ex/Em=535/587nm (fluorometric method). Catalase activity is reversely proportional to the signal. The kit detects high pico-unit of catalase in samples.