The American Water Works Association has issued Standard B-102-04 Manganese Greensand for Filters. This standard describes manganese greensand used in pressure and gravity filters to remove dissolved iron, manganese, radium, arsenic and hydrogen sulfide. It prescribes the placement, handling, preparation and regeneration of manganese greensand media. The publication, catalog number 42102, may be purchased through the website bookstore.
American Water Works Association