B503-84: AWWA Sodium Tripolyphosphate (PDF)

The foreword discusses the history of the standard, manufacture and use of sodium tripolyphosphate, impurities, information regarding use of the standard, and major revisions. The scope of the standard, definitions that apply to the standard, affidavit of compliance, and basis for rejection are addressed in Section 1. Section 2 details physical requirements, impurities, and chemical requirements. Sampling, packing, shipping, and mailing are described in Section 3. Section 4 covers laboratory examination of the sample, and test procedures for size, solubility, phosphorus pentoxide content, and pH.