Samsung water filters are tested and certified by NSF International, a non-profit non-governmental organisation dedicated to public health, safety and environmental protection. Its certification is widely recognised around the world as a guarantee of safety. Certification: NSF 42 for Chlorine Odour and Taste Reductions; NSF 53 for Cysts, Turbidity, Lead, Asbestos, Benzene, Carbofuran, p-Dichlorobenzene and Mercury. This filter is only compatible with the following refrigerator models:BRF365200** BRF425200** RF18A5101** RF20A5101** RF22R7351** RF22R7551** RF23A9071** RF23A9671** RF23A9675** RF23A9771** RF23BB8200** RF23BB8600** RF23BB8900** RF23DB9600** RF23DB9700** RF23DB9900** RF23M8070** RF23M8090** RF23M8570** RF23M8590** RF23M8960** RF23R6201** RF23R6301** RF24BB6200** RF24BB6600** RF24BB6900** RF24R7201** RF26CG7400** RF27CG5010** RF27CG5100** RF27CG5400** RF27CG5900** RF27T5201** RF27T5241** RF27T5501** RF28R6201** RF28R6202** RF28R6221** RF28R6222** RF28R6241** RF28R6301** RF28R7201** RF28R7351** RF28R7551** RF28T5001** RF28T5021** RF28T5101** RF28T5F01** RF29A9071** RF29A9671** RF29A9675** RF29A9675/** RF29A9771** RF29BB8200** RF29BB8600** RF29BB8900** RF29DB9600** RF29DB9700** RF29DB9900** RF30BB6200** RF30BB6600** RF30BB6602** RF30BB6900** RF31CG5100** RF31CG7200** RF31CG7400** RF32CG5400** RF32CG5900** RS22T5201** RS22T5561** RS23A500A** RS23CB7600** RS25H5111** RS27T5200** RS27T5201** RS27T5202** RS27T5561** RS28A500A** RS28A5F61** RS28CB7600**