[Frank pole]

What is the worst ppm you would work with - I have heard people on this site say they work with 15 ppm with no probs - and others say it must be zero ppm or it clouds! who is right?

[johns window kleen]

I would work up to 4 max.

[p1w1]

I have worked with a ppm of 26 for 2 weeks once although i did use more water when rinsing however  i was always worried about spotting but had no problems, when i first got my ro from omnipole they told me anything under 15 ppm would be fine. I normally have my ppm at about 7 and never had any problems with it.

paul

[Oakley Windows]

I have worked with a ppm of 26 for 2 weeks once although i did use more water when rinsing and had no problems when i first got my ro from omnipole they told me anything under 15 ppm would be fine. I normally have my ppm at about 7 and never had any problems with it.

paul

Why if your ppm is that high would you use more water to rinse?

[p1w1]

cause at the time i thought that it would help stop any spotting this was about 3 years ago when i had just started wfp.

paul

[matt]

ive been using i at high 30's for about 2 weeks, i didnt realise, when i did, i measured the oldest drum of water and it was 34 and the latest was 39, i even did my house, i couldnt tell it was high at the time, nothing wrong with the glass

i know a local guy to me who using it upto 45, then changes his resin

[johns window kleen]

We did some houses a few weeks ago in very hot conditions and when checking jobs could see bad spotting despite thorough rinse. Was borrowing a supply of water at the time.

Went to well known national supplier not far from us who TDS'd  the water and it ranged from 24 to 27ppm.

He advised that this was far too high and would definately spot.
Advice was not to go above 4ppm.

I am suprised that people would work at 20+ knowingly, or maybe what we were told was not correct.

[mark dew]

i know a local guy to me who using it upto 45, then changes his resin

45? 
What is his tap water like??
I wouldn't bother with resin if i did that. I would get onto my ro manufacturer though, if my tds is 45 after ro.
My tap water is around 480ppm and 23 after ro. Going down to 7 after a couple of minutes of running.
What ro units give a reading of 40 plus??

[matt]

i know a local guy to me who using it upto 45, then changes his resin

45? 
What is his tap water like??
I wouldn't bother with resin if i did that. I would get onto my ro manufacturer though, if my tds is 45 after ro.
My tap water is around 480ppm and 23 after ro. Going down to 7 after a couple of minutes of running.
What ro units give a reading of 40 plus??

tap water 400 plus

a ro that hasnt been flushed or looked after 

[[GQC] Tim]

I think it also depends on what that 24-45tds consists of, not everything might leave spots?

While this water is no longer pure, it does have a relatively low mineral content. In the UK with our usual south westerly winds, the total dissolved solids reading of this water is around 14 TDS, with the limit for spot free drying being 9 TDS or lower. (Some tap supplies will reach 500+ TDS)

www.clearviewplus.com/faq.html