The item is roll type PH test paper for testing the acidity and alkalinity of liquid. Safe and materials are reliable in quality. With widely test scope, convenient to use it. The roll type PH exam papers are easy to take. Very simple operation steps, no other auxiliary consumables are required. It can reduce your time. Features - - Material: Paper. - Size: 5.20X5.20X1.30cm/2.04X2.04X0.51inch. - Length: 5m. - Made of premium quality paper material, it is excellent and useful, simple and convenient for you. - You can safe to use it. Short test time, this PH exam paper is very easy to use and carry, it is convenient for outdoor test. - Lightweight, small in size, easy and convenient to carry and store, roll type, simple and reliable. - The PH level test papers are especially designed for testing acid and alkaline level. Unique design is precise and accurate. Great and precise PH testing paper. - This product can be given as practical gift for your friends and families. They will be very happy. Package list: 1 Roll x PH Test Paper