The Hydrion AB Dispenser consists of two rolls of paper. One roll has color matches in the Even (Type A) pH range 2-4-6-8-10 while the second roll has color matches in the Odd (Type B) ph range 1-3-5-7-9-11. Chemists appreciate the sharp color changes and the natural spectrum.
Hydrion AB Dispenser Papers have a clear color match at each full pH unit:[2.0][4.0][6.0][8.0][10.0] and [1.0][3.0][5.0][7.0][9.0][11.0].
Each carton contains 10 dispensers, each consisting of two(2) 15-foot rolls of test paper and matching color charts. Provides for approximately 200 tests.