150 Strips Bottled PH Test Strip Full Range 0-14 pH Acidic Alkaline Indicato.qh
8 - 11 indicates alkalinity. 12 - 14 indicates a very high level of alkalinity. 0 - 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%.