Diving rebreathers purify the breathing gas with a chemical process called scrubbing. The chemical most often used in rebreathers is soda lime. There are many different formulations, but soda lime is mostly slaked lime mixed with small amounts of more strongly base pH chemicals known as alkai salts to help speed up the process. Some formulations of soda lime also contain very specific amounts of water needed to begin an effective chemical process. The carbon dioxide gas exhaled by the diver mixes with the water to form a weak carbonic acid liquid. The carbonic acid reacts with the soda lime to form chalk, a stable solid compound that binds the carbon dioxide and removes it from the breathing gas. The chemical reactions also produce heat and more water, which in turn causes the process to continue more efficiently.

Because there are a great many types and formulations of carbon dioxide absorbent, it is critical to use only the specific CO2 absorbent recommended by the manufacturer of your rebreather. Proper storage is a necessity as well, in order to maintain the correct balance and distribution of moisture throughout the absorbent.

The CO2 absorbents we sell are ONLY for use in recreational SCUBA diving rebreathers. We are proud of the quality of our customer service, but we will NOT offer advice in CO2 absorbent selection or use other than what you find published here. If you are uncertain what product to purchase, we strongly recommend you seek formal training for your specific model rebreather. We do not sell CO2 absorbent for any purpose other than diving.

In Stock

> SOFNOLIME, 44 lb Keg

FREE Shipping in Continental US

SOFNOLIME is a granular CO2 absorbent manufactured by Molecular Products Limited in the UK. We offer the two SOFNOLIME diving grade products appropriate for use with sport and technical diving semi-closed and closed circuit rebreather systems.

SL812 and SL408 In Stock Shipping Now!!!

SOFNOLIME Specifications	Item Number
SOFNOLIME Specifications	SL408	SL812
Molecular Products Code	CD	797
Particle Size (mesh)	4 - 8	8 - 12
Particle Size (mm)	2.0 - 5.0	1.0 - 2.5

Molecular Products Limited Logo Sold only in 44-pound heavy-duty reclosable keg containers, the smaller 10-pound twinpacks are no longer available in the US. When stored correctly, SOFNOLIME containers maintain proper absorption capacity for at least five years.

It is critical to follow the specific absorbent use recommendations of your rebreather manufacturer for your specific model. Use of the improper product can cause problems such as excessive work of breathing or shortened scrubber times. Ambient Pressure Diving recommends Sofnolime brand 8-12 mesh absorbent for their Inspiration and Evolution rebreathers. Innerspace Systems Corporation recommends Sofnolime brand 8-12 mesh absorbent for their Megalodon rebreathers. VR Technology recommends Sofnolime brand 8-12 mesh absorbent for their Ouroboros and Sentinel rebreathers. Jetsam Technologies prefers Sofnolime brand 4-8 mesh absorbent for their KISS rebreathers.

Because you asked ... "Is this really Sofnolime™ brand?" Many divers ask because they have experienced first hand that other brands don't perform as well as Sofnolime and contain much more dust. Don't worry, we are offering genuine Sofnolime brand granular CO2 absorbent specifically recommended by the manufacturers for use in their rebreathers. We are not substituting another brand, and we are not substituting a generic brand formula from the same manufacturer. Our absorbent is also fresh (Expiry: 2014) and it is stored in our climate controlled warehouse.

to read Molecular Products certification that SOFNOLIME is classified as non-hazardous and not restricted for transport.

to read the Material Safety Data Sheet (MSDS) for SOFNOLIME.

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Advice regarding travel with SOFNOLIME

Some individuals are reporting difficulty transporting SOFNOLIME, particularly by commercial airline. Occasionally the transport personnel will arbitrarily decide SOFNOLIME is a hazardous material (HazMat) and either refuse it or levy special HazMat surcharges. Although all carriers have this right, in these cases it might help to have a copy of the Material Safety Data Sheet (MSDS) at hand. Point out section #14 of the MSDS that indicates SOFNOLIME has no transport restrictions or UN Number. As a last resort, you might produce a copy of the letter from Molecular Products declaring SOFNOLIME is classified as non-hazardous for transport. As a practical matter, our customers tell us it is nearly impossible to get airlines to accept containers that have been opened, regardless of documentation.

In Stock

$279.00

ExtendAir Absorbent EP Cartridges (8 Pack)

The ExtendAir EP Cartridge is a cartridge CO2 absorbent manufactured by Micropore. ExtendAir cartridges solve many of the problems associated with traditional granular carbon dioxide absorbents. ExtendAir CO2 absorbents are easy-to-use cartridges that quickly load into the scrubber canister even under adverse conditions. Scrubbers designed to use the absorbent cartridge are very compact and low weight, because ExtendAir cartridges are exceptionally efficient. The ExtendAir EP cartridge is recommended for O2ptima and Titan rebreathers.

Sold in twin 4-packs totaling eight cartridges, each cartridge is packaged individually in an airtight sealed and dated container. The twin cases 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 approximately three years.

to read the Material Safety Data Sheet (MSDS) for ExtendAir Cartridges.

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Pricing for CO2 Absorbent

Absorbent may ship from a different location than the balance of your order and may not arrive in a single delivery.
Absorbent prices do include FREE continental U.S. domestic shipping.
Absorbent prices do NOT include international shipping.

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Carbon Dioxide Absorbent for Rebreathers

> SOFNOLIME, 44 lb Keg

FREE Shipping in Continental US

Advice regarding travel with SOFNOLIME

ExtendAir Absorbent EP Cartridges (8 Pack)

Related Products

Pricing for CO2 Absorbent