Patent ID: 9091639
Filing Date: 2015-07-28
Classification: G01N,Y10T

Abstract:
1. A method for calibrating and/or adjusting an analytical device for chemical substances in liquids, comprising the steps of: measuring with the analytical device a predetermined concentration of a chemical substance in a reference liquid by mixing the reference liquid with a reagent for producing a color change, followed by irradiating said reference liquid with light of a predetermined wavelength, and by determining said concentration based on absorption of the light by the reference liquid; comparing the measured concentration with the predetermined concentration of the chemical substance in the reference liquid; and calibrating and/or adjusting the analytical device based upon the comparison, wherein: the analytical device contains therein at least two standard solutions which contain different concentrations of the chemical substance, and the predetermined concentration of the chemical substance in the reference liquid is gained by automatically mixing in the analytical device selected amounts of the at least two standard solutions.