Unit for catalytic activity coherent with the SI, equal to the catalytic activity that catalyses a reaction rate of one mole per second in an assay system. 1 kat = 1 mol s-1. The katal is recommended for use in the specific context of enzymes and clinical chemistry.
PAC, 1996, 68, 957. 'Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)' on page 977 (https://doi.org/10.1351/pac199668040957)