NP 1312-1976
Phosphoric acid used in industry. Measuring the sulfate content in polyphosphoric acid by volumetric method

Standard No.

NP 1312-1976

Release Date

1977

Published By

PT-IPQ

Latest

NP 1312-1976

Scope

This Standard is intended to establis the volumetric method for determining the sulfate content in phosphoric acid for industrial uses, not containing polyphosphoric acids (1).

NP 1312-1976 history

• 1977 NP 1312-1976 Phosphoric acid used in industry. Measuring the sulfate content in polyphosphoric acid by volumetric method