Check the listing for details. SimPure T1-400 UV RO System Water Filter Replacement PP+CTO+T33+RO 1-Year Set. Color: White, Condition: New. Listed at 129.99 USD. Features: PP Melt Blown Sediment Filter: PP Filter removes contaminants 1 micron or greater in diameter. Removes large particles, sediment, dirt, sand, rust, silt, iron, moss, pollen, protozoa and other organisms. 6+ Months, Extended Service Life: The PP water filetr for sink provides you with up to 6+ months of clean filtered water, but may vary depending on local water quality. No Cracking or Leaking: The sealed under sink water filter is made of durable materials, which will not break or leak. The integral design eliminates harmful impurity from breeding, which also allows you to get rid of replacing bottom cap. 3s Replacement, No Disassembly: Replacement can be completed within 3 seconds with a single twist and no need to use any tool. Providing you with the eaisest way to install without disassembly. Workflow: Tap water passes through the PP Filter and CTO Filter and becomes primary purified water, the built-in booster pump will pressurize the primary purified water to 60-110PSI, the actual pressure value can be checked by the water pressure gauge display value. After the RO Filter T33 Filter, ALK Filter, and UV sterilization filtration, the water will become pure water for drinking, and the wastewater will flow out through the other end. When to change the filter:When the tap water temperature and pressure are normal (generally 40-104℉, 15 - 70 PSI)1. When the flow of pure water is less than 0.5L/min, the filter cartridges need to be replaced (It is normal for the flow rate in summer to be slightly higher than the flow rate in winter)2. Check the value of the water pressure gaugethrough the RO filter before the pressure detection (generally normal in the 60-110PSI or so), if more than 130psi, and the wastewater valve is not blocked, then you need to replace the RO Filter, followed by the T33 Filter.If the tap water pressure is 40psi, but the water pressure gauge shows much lower than 40psi, you need to replace the PP Filter, followed by the CTO Filter.3. The actual service life of the filter element depends on the amount of water consumption and quality. T1-400 Replacement Filter Filter TypePPCTOROT33PP+CTO+T33PP+CTO+T33+RO2PP+2CTO+2T33+RO4PP+4CTO+4T33+2ROPrice$15.99$17.99$49.99$22.99$49.99$89.99$129.99$219.99Service Life6 months6 months1 year6 months6 months set6 months set1 year set2 years setPromotionSave Extra $10 For Every $100Note:Please refer to the pressure gauge data for the actual replacement time. Package Included: 1-Year Set: PP: 2x Sediment Filters CTO: 2x Carbon Block Filters T33: 2x Post Carbon Filters RO: 1x RO Membrane