SODASORB Carbon Dioxide Absorbent, Medical Grade (16%) Soda Lime USP-NF with an ethyl violet indicator which turns from white to violet as absorbent is depleted; Manufactured by: W.R. Grace & Co., 6050 West 51st St., Chicago, IL 60638; the product is packaged in pre-paks pre-filled 2.5 lb. canisters, 12 per carton || The indicator soda lime product is used for absorption of carbon dioxide in anesthesia rebreathing systems and respiratory therapy equipment with oxygen, nitrous oxide, halothane, enflurane, sevoflurane, desflurane and isoflurane.