This listing includes:
- (1) JSP 8 ounce bag of Gold Precipitant 8 ounces (1/2 lb) Sodium Metabisulfite, 99% (Na2S2O5) pure food/photo grade.
Also known as SMB, Pyrosulfite, and Disodium.
Used in gold refining as a gold precipitant. To be used as a gold precipitant for aqua regia.
Use 1 oz of SMB mixed in 20-30 ml of water per ounce of metal in the aqua regia solution to precipitate the gold.
A MUST-HAVE for anyone who invests in gold, silver, or platinum!
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