400pcs PH Test Strips PHrange 1-14 Alkaline Acid Urine/Saliva/Litmus Paper Stick

40mm/44mm Clear Ultra Full Case Cover Screen Protector For Apple Watch Series 4 DescriptionIdeal for testing the pH of various substances such as foodstuff, liquid, urine, soil High Accuracy PH 1 - 14 color chart in each pack (The strip color changes must be matched with the PH scale color chart with in 15 seconds) Convenient to carry out Always keep unused pH test strips dry completely Size for pack: Approx: 70 x 45 mm PH range:1 - 14Feature Package includes: Set of 80pcs pH test paper x 5 Size of One pH Test Strip: 23.23'' x 3.1''( L x W ) or 59mm x 8mm ( L x W ) The scale reads from 1 to 14: 1 - 3 indicates a very acidic substance; 4 - 6 indicates an acidic substance; 7 indicates neutral; 8 - 11 indicates alkalinity; 12 - 14 indicates a very high level of alkalinity; The test strip color changes must be matched with the pH scale color chart within about 15 secondsIntruction 1.Simply press the testing strip to the object or liquid you are testing. Half second later, take out the paper and using the color chart included,compare the color change of the paper to find out the acidity level of your testing subject. 2.Can not indicate the Acid or alkali solution when its density was lower than 0.01%. 3.Keep dry for the rest paper.Common uses & Examples Acid Rain, pH = 4.3 5.6 Ammonia Based Glass Cleaner, pH = 10 Battery Acid, pH = 1 Beer, pH = 4.5 Bleach, pH = 12.6 Drain Cleaner, pH = 14 Drinking Water, pH = 6.5 - 8.5 Fruit Juice, pH = 2 - 5.5 Gastric Acid, pH = 1.5 - 3.5 Lemon Juice, pH = 2 Milk, pH = 6.8 Milk of Magnesia, pH = 10.5 Oven Cleaner, pH = 13 Tea, pH = 4.9 7.2 Sea Water, pH = 8 Soap, pH = 7 - 10 Soft Drinks, pH = 2 - 4 Pure Water, pH = 7 Vinegar, pH = 3.1 What's Included 400pcs pH Test Paper (80pcs/pack)