Sodium Metabisulfite Tablets - 25 count

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Sodium Metabisulfite in tablet form. General usage is one tablet per 1 US gallon (provides approximately 65 ppm of sulfur dioxide/SO2).  Similar usage to Potassium Metabisulfite but Sodium Metabisulfite releases sulfur dioxide (SO2) at a higher rate and adds dietary sodium.

Usage: 1 crushed tablet per gallon

Sometimes referred to as "SMB" or "SMS"