Hana for everything and Monthly to six week ATI ICP . Hana High Range Nitrate was a game changer for me . Hana and ICP have been close for last two years plus. I can’t remember a surprise ICP test reading for Hana elements including Magnesium and Calcium. I test twice a week Monday and Thursday. After 15 years manually testing I am ready to automate looking into an Hydros Maven maybe first of year
