pH Buffer Powder Traders in Mumbai. A pH buffer solution is used to help check that your pH meter or electrode is calibrated; to ensure that it is working correctly, to help achieve a pH reading. Directions for use: Pour the contents of the sachet into 250 ml of demineralized water (at a temperature of 25 ° C), stir with a plastic spoon and wait for the powder to dissolve completely, then calibrate the meter according to the instructions using a solution with a specific pH value. We have pH Buffer Powder available at good and cheap prices in Mumbai. Near me pH buffer powder Traders. We have buffer powders of 4.01, 6.86 and 9.18 available. Contact number for pH buffer powder Traders in Mumbai. pH buffer powder manufacturers in Mumbai.