We use purolite as its what we get free from a deal we have in place.I have set up another van and 450gpd Ro and it came filled with tulsion. Have to say that the tulsion doesn't last no where near as long as the purloite. BUT the bags we get have a rrp of several hundred pounds per bag. So its not a fair comparison.When i mentioned Tulsion resin to the chaps we get our free stuff from. He said its like comping M&S food to tesco value. Make of that what you will
Forgot haha. Purolite NRW3240 Thanks.