pH Tester | pH Test Paper | Litmus Paper ❤ Size: 4 x 0.5cm each strip ❤ 80 strips per book (price stated is per book) ❤ With pH chart, easy to refer ❤ Sealed in plastic bag to prevent oxidation which may affect accuracy of pH reading ==USAGE: ❤ Test pH level of liquids such as aquarium water, drinking water/ other beverages, cosmetic, soap, lotion, skincare products, urine, saliva, etc. ==HOW TO USE: ❤ Take a small amount of water from aquarium (or other liquids that you would like to test) and put in a small clean cup. Just a few drops of water is sufficient. ❤ Tear off one pH strip and dip into the water briefly (just dip and take out, don’t leave the strip in the water). ❤ Wait few seconds for the pH strip to change colour. ❤ Compare the colour on the pH strip to the pH chart. ❤ Write down the reading immediately! The result only display temporarily (cannot keep the strip for record because the reading will change after long contact with air, the chemical on the pH strip will oxidize). **pH 7 is neutral, below 7 is acidic, above 7 is alkaline** ==IMPORTANT!! ❤ DO NOT pour the tested liquid back into the original source (eg. aquarium water). Once you have used the pH strip on the liquid, discard the liquid and also the pH strip. ❤ This pH strip is unable to measure weak solution/ solution with acidic or alkaline concentration of 0.01% or below. ❤ This pH strip is unable to measure 0.1-0.9 pH level (eg. pH 5.7 - the chart only reads pH5 or pH6) ❤ Keep the unused pH strips sealed and away from light. ❤ After testing with the pH strip, please note down the reading immediately!! The result will change after exposed for too long. #phtester #phstrip #diytools #phtesting #phtest #acidictester #acidicitytester #phteststrip #litmuspaper #litmus #alkalinetester #alkalinitytester