Carbonate hardness
Carbonate hardness is measured in two units. °KH (carbonate hardness) and °dH (degree of German hardness) and although they have different units, °KH and °dH are closely related.
The difference between the two units lies in their origin and the different aspects of their chemical composition.
Degree of German hardness - °dH: This unit comes from chemistry and refers to the hardness of water in relation to calcium and magnesium salts. One degree of German hardness corresponds to 10 mg of calcium oxide (CaO) per litre of water. Carbonate hardness is often measured in °dH as it is closely linked to the general water hardness.
Carbonate hardness - °KH: This unit refers specifically to the concentration of carbonate and hydrogen carbonate ions in the water. One degree of carbonate hardness (°KH) corresponds to 17.86 mg/l of calcium carbonate (CaCO3) in the water. The carbonate hardness is particularly important for stabilising the pH value in the water
Titromat KH – Automatic Carbonate Hardness Measurement Online Analyzer for Reliable Carbonate Hardness Monitoring The Titromat KH is an automatic analyzer for the continuous determination and monitoring of carbonate hardness (KH) in aqueous media. The device operates according to the titrimetric principle and delivers precise measurements across high hardness ranges. The Titromat KH automates carbonate hardness analysis and is designed for particularly high hardness ranges. Based on the Testomat 2000 technology, it provides a stable and low-maintenance solution for long-term monitoring in technical systems. Automatic Carbonate Hardness Determination with the Titromat KH The device continuously monitors the carbonate hardness in water and delivers reliable values. With freely programmable measurement intervals, automatic calibration, and self-test functionality, it ensures precise monitoring without manual intervention. Performance Profile of the Titromat KH from Heyl Automatic sample handling and easy reagent refilling keep operation low-maintenance. Measurement results can optionally be documented or transmitted to a monitoring system. Flexible measurement intervals can be adapted to the specific requirements of the plant. Optional accessories for the Titromat KH include: Interface card (0/4-20 mA or 0/2-10 V) RS232 interface card (for protocol printers) SD-Card data logger Testomat 2000®