Simple and safe control of the water values in marine aquariums. Determination of pH value, carbonate hardness, calcium, magnesium, copper, ammonium, nitrite, nitrate, phosphate, silicate and oxygen. The water colouration is taken into account by a comparison system. Included in delivery: 1 test case with 29 reagents, 12 glass cuvettes, 2 plastic cuvettes, 2 syringes, 3 dosing spoons, thermometer, protocol sheets with analysis sheet, laboratory comparison system and comprehensive instructions. Easy to use: Pour water into the cuvette, add indicator, compare with the scale or count drops until a colour change occurs. Childproof reagent bottles and a waterproof plastic case are included. Refill reagents are available separately. Group 2 - Excluded from self-service for private use.