Standard (S) reduction filters are a general purpose filter which use Granular Activated Carbon media. They are effective at reducing/removing chemicals (including herbicides and pesticides) and chlorine to improve water taste and odour.
This product is a recharge of media for an existing WH1MS system where the life of the media has become exhausted.
Activated carbon filters remove/reduce many volatile organic chemicals (VOC), as well as benzene, trihalomethane (THM) compounds, radon, solvents and hundreds of other man-made chemicals found in tap water. They are not designed for and not generally effective at removing metals or sediment.