mLabs mlabs-2 Ph Test Strip  (1 - 14)

90 Range 1-14 pH Full RangeTest Paper Strips Litmus paper Testing DESCRIPTION : pH range from 1-14 pH 1-14 color chart with each pack Water, soap, lemon juice,vinegar , milk, liquid detergent, moisturized soil, saliva, urine, sweat...etc. The test strip color changes must be matched with the pH scale color chart within about 15 seconds. Instruction: 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. Keep dry for the rest paper. INCLUDED : 5 x 20 Set of 90pcs pH paper test