Check the listing for details. sodium metabisulfite powder. Condition: New. Listed at 18.00 USD. SODIUM METABISULFITE POWDER SMBS has several industrial and household application as water treatment additive in widely used in swimming pool as chlorine scavenger / reducer supplied in different weights 1lb, 5lb, 10lb, 20lb & 30lb zipper polybags . we are house of chemicals supply all types of small size chemicals in liquid and powder. you may also be interested in other swimming pool compounds ( listed in our ebay site )sodium hypochlorite...chlorine source. Disinfectant solution .sodium bisulfite ...excess chlorine reducer.sodium metabisulfite ..excess chlorine reducer.sodium thiosulphate ..excess chlorine redicer.hydrochloric acid / muriatic acid...PH reducer.sodium bisulfate ...pool acid. supplied in different weights 1lb, 5lb, 10lb, 20lb & 30lb zipper polybags .