80 Strips 1-14 PH Alkaline Acid Indicator Paper Water Saliva Litmus Tester
8 - 11 indicates alkalinity. 12 - 14 indicates a very high level of alkalinity. 1 - 3 indicates a very acidic substance. 4 - 6 indicates an acidic substance. PH 1-14 universal indicator papers for alkaline / acid tests.