Sofnolime Grade 797 Carbon Dioxide Absorbent

Sofnolime
• Manufactured by Molecular Products in the U.K.
• Used in recreational, technical, scientific, and military semi-closed and closed diving rebreathers
• Also used in chambers, diving bells, gas reclamation systems and submarines.
• The 797 Grade, CD Grade, and Military D Grade ship in high-density polyethylene (HDPE) resealable containers with 44 lb (20 kg) of product inside. Military L Grade ships in 42 lb pails.
• Containers can maintain proper absorption capacity for 5 years. Each container marked with an expiration date
• Sofnolime is shipped as ordinary non-hazardous product
• High attrition resistance (low dust formation)
• Follow your rebreather manufacturer’s recommendations for scrubber change intervals
• Only use the specific absorbent recommended by your rebreather manufacturer
• The use of improper absorbent can cause excessive work of breathing and shortened scrubber times

Additional Details For recreational, technical and commercial divers, two grades are available, 797 Grade and CD Grade. The main differences between the two grades are particle size and shape.
• The 797 Grade has a smaller particle size (1.0 to 2.5 mm) and has a triangular shaped cross-section, which combine to give a higher CO2 absorption capacity compared with CD Grade. The 797 Grade is the one most widely used in modern rebreathers. It is generically referred to as “8-12 mesh” or simply “812” by divers because the granule sizes are similar to the apertures found in size 8 wire mesh up to apertures found in size 12 wire mesh.
• The CD Grade is a larger particle size (2.0 to 5.0 mm) with a D-shaped cross-section. It has a mesh size of 4-8 and is often referred to as “408”. It is widely used in commercial diving applications such as chambers, bell scrubbers and gas reclamation systems.
• Both grades are non-color indicating, meaning that they lack dyes that temporarily change color as the CO2 is being absorbed. Rebreather divers should not rely on a color indicator as a reliable method for evaluating continued usage. For military divers and submarines, there are two grades available, 812 D Grade and 408 L Grade. The main differences between the two grades are particle size and shape.
• The 812 D Grade has a smaller particle size (1.0 to 2.5 mm) and has a triangular shaped cross-section, which combine to give a higher CO2 absorption capacity compared with the 408 L Grade.
• The 408 L Grade is a larger particle size (2.0 to 5.0 mm) with a D-shaped cross-section.
• Both grades are non-color indicating, meaning that they lack dyes that temporarily change color as the CO2 is being absorbed.
• Both military grades, without color indicator, pass testing based on NATO standard STANAG 1411