[sjm]

I have tds of 78 , and was wondering how much resin would last with 2 Di s working 3 ( 8 hours ) a week ?   Thanks 

[john tomkins]

www.cleantech.co.uk/tdscalc.htm
You just input your TDS and check how much you'll get out of a sack (25ltrs)

[sjm]

www.cleantech.co.uk/tdscalc.htm
You just input your TDS and check how much you'll get out of a sack (25ltrs)

According to the calculater , if I use just Di only works out at £67 a month !  However if I use RO+DI works out at £16 , saving £50  !  Got me thinking John , thanks 

[Moderator David@stives]

brains

i think with your useage (3 day week) and being a bit lazy, you will get roughly 2 months out of a bag if you use the 2 di bottle in series method.

[Moderator David@stives]

just looked at the calculator and it doesnt ring true, i get double , it doesnt account for you putting your spent resin in front of your new resin.

Yet again another ploy for making you stump up even more cash.

I use 16000 litres a month, roughly costing £100 according to that calculator it says i spend £190 a month.

The moral is "dont believe a word "

[sjm]

Thanks Dave , as always your on the money