Pf:
Abbreviation: the phenolphthalein alkalinity of the filtrate, reported as the number of milliliters of 0.02 normal (n/50) acid required per milliliter of filtrate to reach the phenolphthalein end point.Pf:
Abbreviation: the phenolphthalein alkalinity of the filtrate, reported as the number of milliliters of 0.02 normal (n/50) acid required per milliliter of filtrate to reach the phenolphthalein end point.