PH PAPER 5.5-8.0 DOUBLE ROLL 10/BOX
This Hydrion pH Paper provides excellent color separation in both the acid range (below pH 7) and alkali range (above pH 7). Offers an easy to read, single color match at every .2 to .3 interval from pH 5.5 - 8.0. Each roll provides approximately 100 tests. Tests are most accurate when used to test nutrient solutions.