Envtek is dedicated to providing high-quality reagents for routine and challenging water analysis. Understanding our customers applications has allowed us to formulate reagents that ensure exceptional performance and deliver trusted results. Water quality parameters: Alkalinity ??? Ammonia/Ammonium ??? BOD ??? Chlorine ??? COD Dissolved Oxygen ??? Hardness ??? Nitrite/Nitrate??? Nitrogen pH ??? Phosphorus ??? Silica ??? Sodium ??? Solids ??? TOC ??? Turbi