| Hanna Part No: HI-38050-aquarium
Uses the cadmium reduction chemical method to measure Nitrate in irrigation water and soil, the colour wheel comparator kit contains everything you need to carry out 100 individual tests.
Colour wheel comparators offer a better accuracy than the more simple colorimetric test kits. The coloured disc is graduated and fits into the hand-held comparator, where it is used to compare against a colour that has developed in the water sample after the reagent has been added.
|
