Authoritative Certifications: The filter has been certified by NSF against NSF/ANSI 42 and 372 standards, effectively reducing chlorine content. Activated carbon block and other advanced filter media ensure efficient and safe filtration. AQUACREST F-1000 compatible with InSinkErator F-1000 & InSinkErator F-2000 Filtration System, AquaPure AP Easy C-Complete.Our premium coconut carbon block filter is tested by independent laboratory against NSF/ANSI standard, which can effectively reduce chlorine, taste and odor. Subzero Water Filter Replacement, providing you with high-quality water and making drinking safer. AQUACREST F-1000 replacement water filter for InSinkErator F-1000 is easy to install requiring no tools. For detailed instruction, please kindly refer to the Instruction Manual in the box. To prolong the life of your appliance and achieve optimum performance, we recommend you to replace the F-1000 filter every 6 months or 500 gallons, whichever comes first and will vary based on water conditions. Cost-effective choice helps you save money and enjoy fresh water.Connected with the cold water valve only! This filter does not reduce TDS！ After advanced upgrade, the model number is changed from AQU-F-1000 into AQU-WF03-F1. AQUACREST F-1000, 4204490 Filter, Replacement for InSinkErator F-1000 F-2000 F-3000 Sub-Zero 4204490, 4290510 and AquaPure AP Easy C-Complete, Sub Zero Water Filter Replacement, NSF/ANSI 42, 2 Packs Compatible with F-1000 & F-2000 Filtration System, Sub-Zero 4204490, 4290510, AquaPure AP Easy C-Complete.Our premium coconut carbon block filter is tested by independent laboratory against NSF/ANSI standard, which can effectively reduce chlorine, taste and odor. Subzero Water Filter Replacement, providing you with high-quality water and making drinking safer.