Crystal Quest Double Whole House Water Filter.
water flows through a 10" solid carbon cartridge for removing volatile
organic carbon compounds (VOC's), insecticides, pesticides and
In stage 2, water
flows through one - micron filter pads (1 micron equals 1/25,000th of
an inch), which remove suspended particles such as silt, sediment, cyst
(Giardia,cryptosporidium), sand, rust, dirt, and other un-dissolved
In stage 3, water
flows through granulated activated carbon (GAC). GAC is universally
recognized and widely used as an effective adsorbent for a wide variety
of organic contaminants, such as chlorine (99.9%), chemicals linked to
cancer (THM's, benzine) pesticides, herbicides, insecticides, volatile
organic compounds (VOC's), PCB's, MTBE's and hundreds of other chemical
contaminants that may be present in water that create bad taste and
Carbon is extremely porous and
provides a large surface area for contaminants to collect. Carbon-only
filters must also use their capacity for chlorine removal, resulting in
a shortened life. They also may use a bituminous coal carbon, which is
good at removing chlorine, but not as effective
at removing chemicals.
CQE-WH-01105 use a high-grade coconut shell
carbon that is most effective at removing chemicals. Coconut shell
carbon provides a significantly higher volume of micro-pores than
either coal, wood or lignite based carbon. As a result, it is more
effective than other carbon types in removing trihalomethanes (THM's)
and other chemicals from municipally supplied water. Since our REDOX
media removes the chlorine before it reaches the carbon, the carbon
capacity is not wasted on chlorine and is free to concentrate more
effectively on organic contaminants.
Here to Learn about GAC.
In stage 4, Water
flows through ceramic balls, removes harmful bacteria such as E. Coli,
Fecal coli form, Salmonella, Streptococcus, and cysts (Cryptosporidium,
Giardia) and sediment.
In stages 5 and 6,
water flows through a bed of media made of a special high-purity alloy
blend of two dissimilar metals - copper and zinc KDF-55D ®, and KDF-85D
® . KDF is a major advancement in water treatment technology that works
on the electro-chemical and spontaneous-oxidation-reduction (REDOX)
principles. Chlorine is instantaneously and almost inexhaustibly
Tests on KDF/GAC cartridge have shown
99+% chlorine removal past 20,000 gallons of water. In comparison,
carbon cartridges of comparable volumes drop below 90% effectiveness
after only 4,000 gallons.
to Learn about KDF.
Iron and hydrogen sulfide are
oxidized into insoluble matter and attach to the surface of the media.
Heavy metals such as lead, mercury, copper, nickel, chromium, cadmium,
aluminum, and other dissolved metals are removed from the water by the
electrochemical process. They are attracted to the surface of the
media, much like a magnet. The media inhibits bacterial growth
throughout the entire unit In fact, it has been shown to be reduced up
to 90%, eliminating the need for silver, which is commonly used in
carbon-only filters (silver is considered a pesticide by the EPA and,
as such, must be registered with them).
Is copper or zinc added to the water
in any significant amount? On 2.3 ppm chlorinated water, <0.05
mg/l copper and only 0.46 mg/l zinc were measured. The EPA aesthetic
levels are 1.0 mg/l for copper and 5.0 mg/l for zinc. Both zinc and
copper are essential minerals for good health - the FDA recommends a
daily intake of 15 mg of zinc and 2 mg of copper.
In stage 7, water
flows through another one-micron filtration pad for further reduction
of undesirable particles. The end result is a great reduction or the
total elimination of a wide variety of contaminants.
CQE-WH-01105 Filters 80,000
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Quest Water Filters