BS 4427-2:1969(1999) Methods of test for Sodium tripolyphosphate (pentaSodium triphosphate) and sodium pyrophosphate (tetraSodium pyrophosphate) — Part 2 : Measurement of pH value of sodium tripolyphosphate
1969BS 4427-2:1969 Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use - Measurement of pH value of sodium tripolyphosphate