10 Packs of PH 1-14 Test Indicator 800 Litmus Paper Scale Test Lemon Juice Milk Liquid Detergent Ki white

Easy to use, provides reliable highly accurate pH readings. perfect for pH testing , labs or schools Economical & reliable with the pH test range 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14 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. 10 Books in pack. Each book contains 80 litmus paper strips. There is an English version of the manual on the product, so you don' need to worry about using it colour: white Material: paper size: 55mm x 9.0mm Package Contents: 10 packs x test paper Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.