In-Situ acquired ChemScan in 2019. Together they bring 60 years of experience to the water quality and process monitoring industry. ChemScan now offers a complete process monitoring solution, covering measurement of nutrients (ammonia, nitrate, nitrite and phosphate), residual chlorine, sulfite, PAA, silica, dissolved metals (iron, manganese, chromium, copper, nickel), UV254, color, phycocyanin, blue-green algae, organics, NOM, turbidity, pH, ORP, TSS, optical DO, Sludge Blanket and chloride.