Swan Analytical USA is the US subsidiary of Swan Analytische Instrumente AG, a Swiss manufacturer of drinking water and high purity water quality analyzers. Swan Analyzers are precision-built with innovations in sample handling, preparation, sensing and analysis to deliver high resolution, high precision and high repeatability in critical applications. Variables include pH, ORP, conductivity, acid/cation conductivity, degassed conductivity, silica, phosphates, chlorine, chloramines, total chlorine, ammonium, nitrate, fluoride, total organic carbon, chlorine dioxide, ozone, dissolved oxygen, sodium, iodine, bromine, turbidity (EPA approved), hydrazine and carbohydrazine.