Yes, Sofnolime™ 8-12 Mesh NI (Grade 797) is a suitable granular option for your Dive Rite and Poseidon rebreathers, as well as the Mares rEvo rebreather and almost all other sport and technical diving rebreathers.

The Dive Rite models with the 2015 packable/EAC scrubber can accept either granular or Extendaire cartridge, earlier versions can only accept the Extendaire cartridge. The Poseidon models originally used a Molecular cartridge that is no longer available and now accept a self packable granular canister.