[♠Winp®oClean♠]

The resin "going off" VERY quickly is reminiscent of Purolite! I reckon the Unger is just Purolite or very similar.

Resin like this is the worst you can have, especially for a twin DI system- as they rely on the older resin staying low in TDS for as long as possible.

Purolite goes off the scale within a day. Tulsion holds a low TDS for ages once IT starts to go off.

[hilland]

So do you think its the crap ( unger) resin that has made my first vessel read higher than my tap water

[Sean Dyer]

the way I do it is .... The water comes out of my outside tap , it goes through two Di vessels and then into 25 litre barrels as I use a back pack system , The resin I use ( the only one up to now) is Unger. Defo got the vessels in the correct line . I filled 5 x 25 litre barrels ( which read 000ppm) and then I tested the first vessel which read 105 so it had been working for about an hour as I have the water running as slowly as poss

you got the hoses on in and out the right way?

Sounds simple but could be wrong

[wfp master]

So do you think its the crap ( unger) resin that has made my first vessel read higher than my tap water

aye get some good resin from daqua.

[hilland]

The resin "going off" VERY quickly is reminiscent of Purolite! I reckon the Unger is just Purolite or very similar.

Resin like this is the worst you can have, especially for a twin DI system- as they rely on the older resin staying low in TDS for as long as possible.

Purolite goes off the scale within a day. Tulsion holds a low TDS for ages once IT starts to go off.

yes , this unger resin went over the top rapidly. When I bought my first resin I hadnt a clue which to buy and I didnt even ask as I bought the vessel from Window Cleaning Warehouse they said do yoiu need resin to which I replied yes and thats what they sent me , I see now that there Unger resin has been reduced by £5 per 25 litre bag

[hilland]

I recently bought a cheap DI vessel from e-Bay to test the difference between it and an expensive DI vessel I got from WCW which I am very un immpressed with. To cut a long story short the cheap system has now out lasted the expensive one by well over two weeks and it is still going well , where as the expensive one not only lasted less than half the time but it also startted turning out water which was way higher PPM  than my tap water ( as I explained earlier on this post ) . I am now going to get in touch with WCW and ask for my money back... does any one agree that I am doing the correct thing , cheers Ted

[Perfect Windows]

As far as I believe using 2 di will not save resin as all you are doing is spreading the load over two which one will normally do. Two di will stop the quick rise in in TDs but not reduce the costs.

Reasoning for two DIs is:

Let's say the input is TDS020 (the number doesn't matter, really, the argument is the same).  Have the DI vessels in series, call them A and B respectively.  Once output TDS gets to 001, the resin in vessel A is completely shagged and B is starting to go off.  At that point, replace resin in A and reverse the order of the vessels.  Now vessel B is still outputting at 001 then 002, then 003, up to 020, but you're still getting value out of that resin as it's extending the life of the resin in vessel A (It's working on lower TDS water until the resin in B is completely saturated).

Compare that to having a single DI vessel: In that case, when TDS = 001, you're slinging it all out rather than getting any further use out of it.

Before anyone jumps in, where I've said TDS 001, the actual level at which you dispose of your resin doesn't matter, the principle is the same.  In fact, if you think about it, once you're using two resin vessels, rejigging them at TDS 001 doesn't cost you a penny more in resin than refilling at a TDS of 010, so another benefit is that you can always use completely pure (rather than some arbitrary limit) at no extra cost to you.

I don't think that 2xDI will halve your resin costs but it will certainly cut them significantly.

Vin

[hilland]

I recently bought a cheap DI vessel from e-Bay to test the difference between it and an expensive DI vessel I got from WCW which I am very un immpressed with. To cut a long story short the cheap system has now out lasted the expensive one by well over two weeks and it is still going well , where as the expensive one not only lasted less than half the time but it also startted turning out water which was way higher PPM  than my tap water ( as I explained earlier on this post ) . I am now going to get in touch with WCW and ask for my money back... does any one agree that I am doing the correct thing , cheers Ted

Bump

[♠Winp®oClean♠]

I recently bought a cheap DI vessel from e-Bay to test the difference between it and an expensive DI vessel I got from WCW which I am very un immpressed with. To cut a long story short the cheap system has now out lasted the expensive one by well over two weeks and it is still going well , where as the expensive one not only lasted less than half the time but it also startted turning out water which was way higher PPM  than my tap water ( as I explained earlier on this post ) . I am now going to get in touch with WCW and ask for my money back... does any one agree that I am doing the correct thing , cheers Ted

Well, if you've done evrything right & the performance is lower than a standard DI vessel then I would say give them a ring at least! After all, they are sold as being more economical than standard vessels.

[squeegee master]

go trad