Sofnolime is the market leading carbon dioxide absorbent brand for use by leisure, commercial and defense divers in rebreathers and hyperbaric dive systems. Manufactured by Molecular Products, working closely with dive equipment manufacturers and users, Sofnolime is available in a range of dive-specific grades to ensure each grade meets equipment requirements.

Two grades are available, 797 Grade and CD Grade. The main differences between the two grades are particle size and shape. CD Grade is a 2.0mm to 5.0mm extrudate with a D-shaped cross-section. The 797 Grade has a smaller particle size (1.0mm to 2.5mm) and has a triangular cross-section, which combine to give a higher CO2 absorption capacity compared with CD Grade.