160x pH Indicator Test Strips 1-14 Laboratory Paper Litmus Tester Urine Saliva

Labratory pH indication strips with several uses. You can use the paper for cooking, like checking the acidity of coffee or the alkalinity of tea. Match the color changed strip with the pH scale color chart within ~15 seconds Maintain a healthy lifestyle by testing many common everyday substances, such as moisturized soap, lemon juice, milk, liquid detergent, moisturized soil, saliva, urine, sweat, etc.