Description
HI775-11 is a high-quality set of calibration standards that allows users to validate the Freshwater Alkalinity Checker® HC – HI775 . The HI 775-11 includes one sealed cuvette for zero ppm CaCO3 and one cuvette that is tinted to an equivalent 100 ±10 ppm CaCO3 sample @ 25℃. The calibration check set is produced in our state-of-the-art manufacturing facility using reagent grade chemicals in a temperature controlled environment.