B601-83: AWWA Standard for Sodium Metabisulfite (Sodium Pyrosulfite) (PDF)

History of the standard, manufacture and use of sodium metabisulfite, impurities, information regarding use of the standard, and major revisions are addressed in the foreword. Section 1 discusses scope of the standard, affidavit of compliance, and rejection of the material. Section 2 covers size, impurities, and available sulfur dioxide. Sampling, packing, shipping, and marking are described in Section 3. Handling of samples and testing methods for available sulfur dioxide are covered in Section 4.