Where's the best place to buy resin and can anyone recommend a good resin for water of approx 100ppm?
We use a merlin RO system first and then pass it through the DI tank and have an IBC filled with 1000 litres ready for filling the tanks in the vans. If we have to fill up with customers 'tap water' when we're out and about (too far away to come back to yard) we pass that through the DI tank we carry in the van.
I filled up a couple of the DI tanks a couple of days ago (a different make of resin in each tank, but don't know which one was which now!) and ran the tap water through them - one tank went down to zero within a couple of minutes and the other ten mins later was still reading 26ppm. Not sure why I couldn't get it down to zero, but any ideas of a good resin? Looking to buy half a dozen 25 litre bags. Thanks