RIGAS can save you money on desiccant cartidges by regenerating your saturated cartridge for half the cost of a new cartridge. Although not all cartridges can be serviced, the popular 1647727 from Parker can. This part number is used often in hydrogen generators for FIDS. Send us your used cartridge and we will restore it to like-new. Your desiccant cartridge will be returned to you in a moisture proof container ready for its next rotation.