I've found the best prices anywhere to buy U.S. manufactured, tech 80% sodium chlorite: $30/1 lb., $100/5 lbs., $180/10 lbs., further discounts on bulk quantities. It was shipped very quickly. Contact is Lisa at email@example.com When you email, put sodium chlorite in the subject line or it will be junked. This happened to me so it took me awhile to contact her. She sells it for water purification and only accepts postal money orders. Hope this helps.