http://www.waterfilters.net/refrigerator-water-filter-water-sentinel-wsw-1.html<br />The Water Sentinel WSW-1 Refrigerator Filter is an economical compatible for the Whirlpool 4396508. The WaterSentinel WSW-1 contains a compressed carbon block which provides tremendous capacity to remove and/or reduce impurities and sediment that may be present in your drinking water. The carbon block has millions of active sites on it's surface and within the structure which can absorb impurities like a sponge, and can adsorb and hold other types of impurities on it's surface like a magnet. The WSW-1 filter can catalytically breakdown other impurities very similar to the way a catalytic converter works in your automobile. The WaterSentinel WSW1 is a replacement filter for Whirlpool 4396508 and 4396510 refrigerator filter cartridges. The WSW-1 refrigerator filter will remove or reduce chlorine bad taste and odors. The Water Sentinel WSW-1 water filter does not remove minerals which may be beneficial to health. The Water Sentinel WSW-1 Refrigerator Replacement Water Filter has been tested by the manufacturer against ANSI/NSF Standard 42 for the reduction of Chlorine Tastes and Odors.
