ITEM NAME:1-14 PH 100Strips Alkaline Acid Indicator Paper Water Saliva Litmus Testing Kit.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. Can not indicate the Acid or alkali solution when its density was lower than 0.01%.
