A2O Water - USA Made High Performance Water Filter Cartridge - Original HG Model - Compatible with Refrigerators, Under Sink & Whole House Water Filtration Systems

High Performance Water Filter Cartridge Advanced multi-stage 5 micron rating carbon block filter. New technology with highest grade coconut shell carbon removes chlorine and odor for clean and great-tasting water. Specially designed for Sanastec and compatible with most Enagic and Toyo water ionizers. Recommended replacement every 6-12 months. Made in USA. High Performance compatible filter cartridges 5 micron rating coconut shell carbon block3,000 gallons high-capacity chlorine taste and odor reduction7-75 PSI applicable water pressure104 F Maximum operating temperatureAdvanced multi-stage filtrationMaterials and components used are food-grade.Offer both HG and HGN (Your machine is compatible with “HG” or regular filters if the filter base/tray/nipple has a completely round center hole. Your machine is compatible with “HG-N” filters if the filter base/tray/nipple has 2 indents/notches in the center hole.) HG or HGN? Please ensure that you ordered the right filter type for your machine. Carbon Block Filter is a better choice Activated carbon is a form of carbon that has been processed to increase the porosity of the individual granules, resulting in a large surface area available for adsorption. Activated carbon is utilized in water filtration in two basic forms: Granular Activated Carbon (GAC) and carbon block. Both forms use carbon that has been ground into small particle sizes. Filter Design GAC filters have loose granules of carbon. To produce carbon blocks, the activated carbon particles are ground into “fine” mesh that is 7 to 19 times smaller than GAC. Therefore, carbon block filters are stronger than GAC filters and will not allow changes in water pressure to create channels where water can pass through unfiltered. Channeling effect occurs in GAC filters. Filtration Efficiency Carbon block filters remove more contaminants than GAC filters due to the larger surface area and uniform pore structure. Carbon blocks can remove chlorine more effectively, eliminate undesirable odors and reduce volatile organic chemicals and other chemical contaminants. Due to their loose column of carbon, GAC filters have lower contaminant removal ratio and less resistant to channeling. Micron Rating Carbon block filters are usually rated by the size of particles they are able to remove, measured in microns and generally ranged from 20 microns (least effective) down to 0.5 microns (most effective). Most 0.5 micron nominally rated carbon block filters are effective in cysts and asbestos reduction. GAC filters cannot be measured in micron pore size due to their granular state. Overall Filtration Because of its static composition, carbon block releases minimal carbon fines when first installed and have come in contact with water for the first time. The GAC filter, on the other hand, releases carbon fines to the first few gallons of water. Overall, carbon block is a better choice in water filtration system due to its high effectiveness in removing contaminants. Compatible with most A2O Water, Enagic and Toyo water ionizers. Ionizer Machines fit HG type filter IE 300, 400, 500, 900Leveluk SD 501 (Please see the images above to verify the filter type, HG or HGN)MX 55, 99VENUSProtec Ionizer Machines fit HGN type filter Leveluk SD 501 (Please see the images above to verify the filter type, HG or HGN)Leveluk JR IIK8