
1) SI derived unit 2) Unit of chemical measurement
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The katal (symbol: kat) is the SI unit of catalytic activity. It is a derived SI unit for quantifying the catalytic activity of enzymes (measuring the enzymatic activity level in enzyme catalysis) and other catalysts. Its use is recommended by the General Conference on Weights and Measures and other international organizations. It replaces the non...
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http://en.wikipedia.org/wiki/Katal

Unit of catalytic activity equal to one mole of product formed (or substrate consumed) per second, as of the amount of enzyme that catalyses transformation of one mole of substrate per second. ... Abbreviation: kat ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973
(kat) Type: Term Pronunciation: kat′ăl Definitions: 1. Unit of catalytic activity equal to 1 mol of product formed (or substrate consumed) per second. 2. The amount of enzyme that catalyzes transformation of 1 mol of substrate per second.
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