CuZn ILFC-200 Chloramine + Fluoride Inline Refrigerator Water Filter NSF CERTIFIED: Certified by Amazon Approved Certification Agency IAPMO to NSF 61, NSF 42 & NSF 372. Chloramine Removal Testing also Performed by IAPMO. UNIVERSALLY COMPATIBLE: Fits Any Make or Model Refrigerator! The ILFC-200 is Designed for Municipal Water, Not Private Well Water. The ILFC-200 is a Water Purification System, it is Not a Water Softening System. 4 STAGE FILTRATION PROCESS: Micro Sediment Membranes, KDF-55 Filtration Media, KDF-85 Filtration Media, ACSD-17 Filtration Media & Catalytic Activated Coconut Shell Carbon. Process Purifies the Water Without Removing Health Beneficial Hardness Minerals, The ILFC-200 DOES NOT REDUCE TDS READINGS, a PPM or TDS Meter is Not Effective for testing. Want TDS Removal? Search ASIN# B019N7VG1W on Amazon to View CuZn's Reverse Osmosis System. BACTERIOSTATIC FILTRATION SYSTEM: All Ice & Water Dispensed from The Fridge is Pure & Delicious. Bacteriostatic, Unlike Generic Carbon Filters, The ILFC-200 is Not Susceptible to Mold or Bacteria Growth EASY INSTALLATION (VIDEO AVAILABLE): Replace every 500 gallons or 1 year. To Monitor The ILFC-200 with Testing, Utilize DPD#1 Chlorine Test Strips and Replace when Chlorine Breakthrough is Detected. NEW Install Video Instructions Available! (see product description for details)