A photometer is required, for example, manufactured by Hach-Dr.Lange, Merck-Millipore, Hanna, Macherey-Nagel with an established calibration dependence. We advise you to discuss the suitability of your photometer with us.
The determination includes sampling (and its preparation in the analysis of soils), the addition of test components, and the measurement of optical density. The concentration of the analyte is determined by a predetermined calibration curve.
Water:
Color, Turbidity, Dissolved oxygen, pH, NH4+, NO3–, NO2–, PO43-, F–, Cl–, SO42-, SO32-, S2-, I–, Active chlorine, Ozone, Si, Total hardness, Ca, Mg, B, Fe, Mn, Cr, Zn, Ag, Cu, Ni, Al, Co, Cd, Mo, Phenolic index, Formaldehyde
Soil (the package includes everything necessary for sample preparation):
Ammonium nitrogen, Nitrate nitrogen, Mobile phosphorus, Potassium, Humic acids, Exchange acidity, pH, Mobile forms of Manganese, Zinc, Copper, Molybdenum, Total heavy metals, Hydrazines, Chlorides