The actual quality that is obtained depends on the manner in which the cartridge is configured

New DOW FILMTEC 75 GPD residential membrane element [ BW60-1812-75 ] is our industrys most reliable

this gives you less than 50% of your normal performance

FOR 75-150 GPD MEMBRANES

The resin color changes from blue to a light brown/amber color when it is exhausting

Aries Phosphate Cartridge FlowMeters The actual quality that isAries Phosphate Cartridge Phosphate Filter By Aries Aries FilterWorks 3300 series Phosphate Cartridge contains food grade, slow melt polyphosphate that dissolves in water to inhibit scale and rust build up. This filter is used primarily where scale, corrosion and increased amounts of iron are present in the water source. Phosphate cartridges are also available in combination with coconut shell GAC. The additional combination improves taste and odor