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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: DaveG on June 07, 2013, 08:16:01 am

Title: Tds before and after Ro
Post by: DaveG on June 07, 2013, 08:16:01 am
Hi Guys..

My tds reading is 340 from tap and after RO it's 14-15, so not too bad. Is there a calculator online, to show how long resin will last? Or are there any clever guys here that can work it out?

On avearge, I use around 500 litres a day...
Title: Re: Tds before and after Ro
Post by: p1w1 on June 07, 2013, 09:23:20 am
thats roughly the same as me but we use about 800lt a day and a bag of resin lasts over a year, gardiners website had a resin calculator on it but i cant see it anymore but to be honest it wasn't that accurate.
Title: Re: Tds before and after Ro
Post by: R.C Property on June 07, 2013, 04:13:50 pm
our water starts at 450ppm, then after RO comes out at 012-014ppm,

we have a 1lt di on the end that lasts us upto 2 weeks. would last longer but we only work with the water on 000ppm, unlike some people that work upto 010ppm.
had one bag of resin last us over a year now,

our filters are changed every 6 months and membrains have been in fro 2 years now,

maybe look at changing filters/membrains too?? or flush longer as you water is lower than ours but coming out higher than ours!
Title: Re: Tds before and after Ro
Post by: DaveG on June 08, 2013, 11:30:27 am
Cheers R C

 :)