Choose the reagent tablets you need for Orion™ AQUAfast colorimeters and Thermo Scientific™ Orion™ AquaMate Vis and UV-Vis spectrophotometers with Thermo Scientific™ Orion™ AQUAfast II chemistries test kits. These convenient, rapidly dissolving tablets can be precisely added to samples without leaving residual reagent in the packaging and are very stable for long shelf life accessibility. Tablet reagents measure alkalinity, aluminum, ammonia, boron, chloride, chlorine, chlorine dioxide, copper, DEHA, hardness, hydrazine, hydrogen peroxide, iron, manganese, nitrate, nitrite, ozone, pH, phosphate, potassium, silica, sulfate, sulfide and zinc.