A method for determining the total hardness of a water sample and analysis device

摘要

The present invention relates to a method for determining a total hardness of a water sample by means of an automatic analysis device, comprising:- Production of a reaction mixture, wherein the production of the reaction mixture at least the addition of a predetermined amount of a complex compound with the total hardness which influences the ingredients of the sample in the form of the indicator - reagent to the sample and the adaptation of the ph - value of the reaction mixture on a predetermined measuring range of the total hardness comprises;- After the production of the reaction mixture means of irradiation with measuring radiation of a predetermined first wavelength range in the reaction mixture and receiving the measuring radiation after passing through of the reaction mixture by means of a radiation detector, which a of an intensity of the received measuring radiation outputs a receiver signal; and- Receiving and processing of the received signal by means of a control electronics, wherein said processing of the receiver signal are the determining a measured value of the total hardness of the sample according to any one of the predetermined measuring range of the total hardness adapted algorithm from the detector signal of the radiation detector comprises.n="32"