For the determination of cyanuric acid. Cyanuric acid, also known as stabiliser, can influence the effectiveness of free chlorine and thus also the effect of water care or disinfectants. The concentration of cyanuric acid can be determined with quick tests. To do this, the tablet is added to a water sample. A characteristic turbidity develops, which is measured optically with a dip tube. When analysing with the photometer, all that is needed is to add the tablet to a water sample and press a button. The tablet form is the most popular indicator system because it is safe and easy to handle. it can be dosed precisely, has a long shelf life and is safe to use