Hardnessanalyser ultralow range watertreatment station, electrical power and heating plant. Hardness of water in the treatmentstation has to be monitored at a very low level on several sampling spots - from the outlets of the iron exchangers until the ready made, stored make up water. Determination is done by titration using a copper electrode as a detecting element. Ultra precise determination with an excellent repeatability gives results below lab sensitivity. Measurement range from 5-100 MICRO VAL.