... , boilers & cooling towers, food processing, physics & chemistry teaching, water treatment, cosmetics, wine, home, office, travelling and more.DisplayLCD, 34mm x ... (Fertilizers, Pesticides, detergents)Liver, kidney and nerveWhiteMagnesium compound, calcium compoundCalculiColloid, bacteria, viruses algaeInfectious diseaseAsbestosCarcinogensBlackHeavy metal compoundsLiver, kidney, central ...