1. | GE Plumbing Product GNUL30B User Guide GE Appliances Water Filtration System Faucet amp Base ll L_ 11 ir L GNUT05B and GNUL30B are Tested and Certified by NSF International against ANSI NSF Standard 42 for Particulate Reduction Class I Chlorine Reduction Class I and Taste and Odor Reduction GNUL30B is Tested and Certified by NSF International against ANSI NSF Standard 53 for Cyst Turbidity and Lead Reduction GXEM01B is Tested and Certified by NSF International against ANSI NSF S |