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Replacement Carbon Prefilter Cartridge for NTR-RO-50 Home RO System - Stage 2 Model Number: NTR-50C Compatible with Systems: NTR-RO-5...
View full detailsReplacement Sediment Prefilter Cartridge for NTR-RO-50 Home RO System - Stage 1 Model Number: NTR-50S Compatible with Systems: NTR-RO...
View full detailsReplacement Carbon Post-Filter Cartridge for NTR-RO-50 Home RO System - Stage 4 Model Number: NTR-50C ...
View full detailsNTR cartridges are not compatible with Simple-Change RO 50SC and 100SC. See Watts Kwik-Change Cartridges.
Stage # | Cartridge Model | Description | Label Color | Recommended Replacement |
1 | NTR-50S | Sediment Prefilter, 5 Micron | Red | Every 6 Months |
2 | NTR-50C | Carbon Prefilter, Extruded Carbon Block | Yellow | Every 6 Months |
3 | NTR-50M | 50 Gallon Per Day RO Membrane | Green | Every 12 Months |
4 | NTR-50P | Carbon Post Filter, GAC | Blue | Every 12 Months |