pH 7 calibration solution

Fresh water alkalinity photometer This measurement is important to define the corrosive characteristics of water, due mainly to hydroxide, carbonate and bicarbonate ions, and to anions which cause hydrolysis such as phosphates, silicates, borates, and the salts of some organic acids. Measuring alkalinity is essential when monitoring soil, drinking water...

Nitrates checker HI97728C reagent (100 tests)

Nitrates checker (up to 30,00 mg/L) Freshwater only! Nitrogen compounds such as nitrates result from the decomposition of micro-organisms present in the ecosystem. They are naturally present. Nitrates are largely ingested in the composition of fertilizers and are detected in the water of all agricultural regions. European standards allow a...