Radical Deal 1-14 PH Indicator, Set of 160 Paper Strips
There is a strong correlation between the pH of the body's internal environment and pH paper help you to maintain good healthy body by testing many usual everyday substances, including moisturized soap, lemon juice, milk, liquid detergent, moisturized soil, saliva, urine, sweat...etc.The scale reads from 1 to 14:1 - 3 indicates a very acidic substance4 - 6 indicates an acidic substance7 indicates neutral8 - 11 indicates alkalinity12 - 14 indicate a very high level of alkalinity.Note: The test strip color changes must be matched with the pH scale color chart within about 15 seconds.