The Omnipure Q5586 GAC and polyphosphate water filter is very "user friendly". |Replacement of the spent media bed is done quickly by detaching the filter body from a permanent head with a twist of the wrist. |The new Q5586 filter body is just as easily threaded into the head and the replacement is then complete. |The Omnipure Q5586 is also available with the optional Twist Tap in-head valve system, which automatically turns the supply water off when the body is disconnected from the head. |The Omnipure Q5586 Water Filter can be used in ice makers, refrigerators, beverage equipment, drinking fountains, under the sink systems, and reverse osmosis systems. |The Omnipure Q5586 GAC/Phosphate water filter consists of granular activated carbon used to reduce taste, odor and chlorine taste and odor along with a polyphosphate scale inhibitor.