This Exstream Prefilter attaches to the bottom of your ViruStat water purification cartridge. The activated coconut carbon granules reduce pesticides and herbicides while removing sediment & organic contaminants that create unpleasant tastes and odors. Perfect for extended travel in regions with questionable water quality. The Exstream Prefilter extends the life of the cyst filter & removes impurities that cause unpleasant water taste. |