This method is designed to indicate the active and the total acidity or alkalinity of an aqueous extract of insulating papers for electric cables. Since the aqueous extracts of most untreated papers used for electrical insulation are normally unbuffered and are readily affected by atmospheric conditions, this method embodies features to minimize errors from this source.
IS 10810 Pt.26-1984 history
1985IS 10810 Pt.26-1984 Cable Test Methods Part 26 pH Value of Aqueous Extract Test of Insulating Paper