This Cartridge Filter Kit includes one replacement filter with O-ring attached and one replacement check valve for the SoClean 2. The filter and check valve should be replaced every six months. This kit is suitable for all SoClean machines with "1200SC" in the serial number.

 The Cartridge Filter converts activated oxygen back to regular oxygen as it leaves the SoClean 2 chamber. The check valve prevents water from your CPAP from damaging your CPAP electronics.

 SoClean has discovered counterfeit Cartridge Filter Kits being sold with check valves and filters, that leak and can cause damage to your SoClean machine or to your property due to water leakage from the counterfeit check valves. Please purchase your Cartridge Filter Kits from SoClean® only. Authentic Cartridge Filter Kits can be purchased from SoClean via multiple online marketplaces. Please confirm that the seller of your Cartridge Filter Kit is SoClean, and not any other seller, to ensure the authenticity of your Cartridge Filter Kit. Please contact SoClean immediately if you have had any issues with your Cartridge Filter Kit.