Abstract

Test instructions for measuring eight different enzymatic activities are described. These enzymatic activities of the microbial metabolism in water can be measured after an addition of chromogenic substrates and their turnover. After the reaction the concentration of the chromophoric group proportional to the enzymatic activity is determined photometrically. If the molar value of the chromophore in the original substrate is known and the reaction is linear, the enzymatic turnover can be calculated in percentual degree of conversion per liter and hour.

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