Features： 1、Fast Test: This PH test paper can particularly test liquid fast, with getting results within 15 seconds, saving time and improving efficiency. 2、Easy To Use: Simply dip the paper into the solution, wait 15 seconds and then compare the color of the reaction zone with the color card. 3、Accurate: The test results are particularly accurate, with an accuracy of 96%, and has the ability of resistant to VC interference. 4、Wide Range of Applications: Can test for many common substances including lemon juice, milk, liquid detergents, moisturising soil, saliva, urine, sweat etc. pH paper can help you maintain good health. 5、100PCS: This pH reagent paper is available in large quantities, each one is small and portable, can easily test the level of pH index anytime and anywhere. The sufficient quantity also ensures a long usage time. Specification： Item Type: PH Test Strips Material: PET Quantity: 100pcs / Tube Accuracy: 96% Shelf Life: 2 years Testing Time: 15s Advantage: With anti VC interference ability Test Items: PH Application Scope: Applicable to urine, water quality, saliva testing Package List： 100 x PH Test Strips 1 x Instructions