[geefree]

Like mine on 0.00 ... but sometimes it has run up to 7 tds .... without me checking ..when filters need changing,  so it must have been ok...

anyway lets have an honest little poll for fun 

[keyser soze]

at the mo im running at 000 but have had it as high as 009 before

[DaveG]

20 or below

[Small but perfectley formed]

0.00 but I have cleaned with 7 ppm  done on fortnightly cleans with no complaints

[ben M]

003 at the moment 

[bobplum]

i havent changed my filters in 2 years and only gone thru one small bag of resin,which as now ran out

[geefree]

Think i am lucky too.... never changed my membranes in 4 years ,  and never used resin.

[jarvy]

As soon as mine gets to 1,resin gets changed.
Why risk spots?

[S.A.J]

We let ours go up to 10 then change the resin

[Ian101]

When on song my 4040 will produce 002 but most days 005 / 006.

When DI gets to 001 it gets changed but may use 001 for a day or two.

It dont cost the earth to get 000 so dont see point in cleaning with anything other than 000.

However Im an anorak and carry a spare TDS meter in glovebox in case a customers wants a demonstration of tap water tds via my tds 

[Window Washers]

000
and change resin when it starts to rise 001/002

[Ian Lancaster]

I tell the lads that anything under 10 is fine - and it is, never any complaints that could be attributed to "unpure" water.  Most of them have 300gpd's that produce in the low teens before DI and we have one 40-40 that consistently produces 6-7 and we don't bother with DI for that one.

000 is not a magic number, all you need is water that is pure enough not to allow any dissolved material to precipitate out on the glass as it dries.  The is no law that says this has to be below 1 ppm,  that's just a convenient benchmark - if the result is as required, the water is pure enough.  We've just heard of Ionics "0 parts per billion" - that's not going to make the window any cleaner, it's just a gimmick Ionics have dreamed up to entrap the gullible.

[rosskesava]

Mines 001 at the moment.

I change the resin when it reaches 015 which is a number I pulled out of a hat.

[britishwill]

ABOUT 1-3 tds. I have worked with 5-10 whilst waiting for some resin

[♠Winp®oClean♠]

I tell the lads that anything under 10 is fine - and it is, never any complaints that could be attributed to "unpure" water.  Most of them have 300gpd's that produce in the low teens before DI and we have one 40-40 that consistently produces 6-7 and we don't bother with DI for that one.

000 is not a magic number, all you need is water that is pure enough not to allow any dissolved material to precipitate out on the glass as it dries.  The is no law that says this has to be below 1 ppm,  that's just a convenient benchmark - if the result is as required, the water is pure enough.  We've just heard of Ionics "0 parts per billion" - that's not going to make the window any cleaner, it's just a gimmick Ionics have dreamed up to entrap the gullible.

Good post, I agree.

[scud]

  I let it run upto about 20-25, have never had a problem, infact I waste my time with DI, when I run out of resin, sometime in the next couple of years, I will go RO only.

[Window Washers]

  I let it run upto about 20-25, have never had a problem, infact I waste my time with DI, when I run out of resin, sometime in the next couple of years, I will go RO only.

I hope this catches on, because I can see a marketing angle right there 

[Pureclean Essex Services]

As soon as mine gets to 1,resin gets changed.
Why risk spots?

Try shaking your resin vessel up,you'll find it goes back to 000,I take mine out every week & shake it up,when the TDS does'nt drop then I change the resin,I use mine upto 005,no complaints & no spotting.

Brian.

[britishwill]

There should be no spotting up to 20ppm maybe higher

[windiewasher]

40