Universal pH testing: pH test strips made from litmus paper ideal for testing fluids in the home, laboratory, schools and for hobbies. With a colour table for comparing pH values. VERSATILE TEST STRIPS: the pH strips have a wide range of application for testing acidity and alkalinity. Ideal for testing saliva, drinking water, aquariums, hydro cultures, food, soil, rinsing liquids, soap etc. EASY TO USE: Hold the litmus test strips in the fluid you are testing. After about 15 seconds, check the result and compare it to the pH colour palette. QUICK RESULTS: The test strips deliver reliable results in the pH range 0-14 within seconds. PRACTICAL ROLL: The indicator strips come in a roll from which the desired number of strips is imply pulled off. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.