The 801C large bore cartridge is recommended for the Dive Rite O2ptima (all models), Kiss GEM, OSEL Apocalypse, and Titan rebreathers. Our absorbent is fresh and it is stored in our climate controlled warehouse. The individually sealed cartridges need only be opened immediately prior to use and are date stamped to assure freshness. Sold by Dive Gear Express in twin 4-packs totaling eight cartridges, each cartridge is packaged individually. The twin boxes are further packaged by Dive Gear Express in a cushioned shipping container designed to get them to your door in perfect condition. When stored correctly, ExtendAir containers maintain proper absorption capacity for five years. Absorbent prices do NOT include free shipping.

ExtendAir absorbents use the same chemistry as granular absorbents but in the form of easy-to-use cartridges that are quickly loaded into the scrubber canister (even under adverse conditions). ExtendAir cartridges reduce problems of channeling associated with granular absorbents because they eliminate both settling and individual differences in canister filling technique. ExtendAir cartridges also eliminate the problem of absorbent dust contamination.