[herbiefatboy]

what is the reading on t.d.s when you should change your resin in a r.o system any help would be appreciated thanks

[replacement]

I tend to goto 015 ppm, but 90% of the time change when it reaches 010 ppm. I Have been told by a supplier that 035 ppm is still ok, but i have never gone higher than 015 ppm.

Justin

[AuRavelling79]

I was told 10ppm is about the right time to change and that for "less fussy" (commercial?) work you could get away with 20ppm.

I'm very fussy and change at 005! But not one client has dropped me since I went wfp three months ago. (There's still time tho' - so I'm not complacent!)

[herbiefatboy]

thanks for the replys so far how long does the resin in a r.o system last in hard water area  roughly thanks

[thewindowcleaner1]

I usually change my resin at about 4 to 6 it sounds low but in the last three years of using WFP I have only used 1 and a half bags of resin.
After reading postings on this forum has made me relise that I made a good decision when I followed my suppliers advice and installed an RO although at the time it was an expensive addition,

Alan

[easycleanwindows]

i change mine at 15 max but have two 25ltr cylinders.i normally change one cyliner at about 3-4 weeks but thats after using 3,500ltr water per week so im getting 14,000ltr before needing to change then i go to the second cylinder and that lasts about 2 weks as i then use the one reading 15 as the filler.