Brug disse kalibreringsstandarder til at kontrollere dit kolorimeterinstruments funktion, før du måler COD-kemi, for eksempel i miljø- og spildevandsovervågning.
VHG Labs offers ISO 17034 metallo-organic and aqueous inorganic certified reference materials for oil, fuel, and coolant analysis as well as a variety of certified standards for environmental, pharmaceutical, and industrial applications