PH VALUE

Test Methods for determining the PH Value of 5% slurry of pigments and extenders.

APPARATUS REQUIRED :

1. Erlenmeyer flask. (Glass Stoppered) 125 ml.

2. Glass beaker 100 ml.

3. PH meter.

4. Distilled Water.

PROCEDURE :

Weight accurately 5 gms of the test sample and transfer in the erlenmeyer flask. Add a 100 ml. of the distilled water into the flask, stopper the flask and mix its contents thoroughly by shaking for about a minute. Keep the flask aside for one hour caliberate the PH meter in accordance with the manufacturers instructions. Transfer an appropriate amount of the clear aqueous solution from the flask into the beaker. Keep beneath the cell of the PH meter and note the PH value and report.