The Puratap pre-silt channel is made of finely spun polypropylene. Its pore measure is 1 micron and it is intended to evacuate the earth, rust and undissolved natural issue from your water. Puratap channels are held set up by a twofold o-ring tighten end top being the best water filters. This implies one end tightens to the highest point of the unit, and the flip side is fixed. This takes out any probability of water bypassing the channel! Our engineers have developed filters such that they kill all the harmful microorganisms and filter out many minute dust particles to deliver you the purest water.