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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: andy east sussex on November 22, 2005, 11:44:29 pm

Title: ro / di ?
Post by: andy east sussex on November 22, 2005, 11:44:29 pm

wots the diffrence im confused about all these systems

Title: Re: ro / di ?
Post by: Andrews_Water on November 23, 2005, 08:40:27 am

Hi Andy,

This might help - just click on the link below.

http://www.andwat.co.uk/acatalog/HOW_WATER_PURIFICATION_WORKS.html

Yours, Andrew

Title: Re: ro / di ?
Post by: Roy Harding on November 23, 2005, 08:41:15 am

Hi Andy

The both make pure water but they differ in the way they do it.

DI is a container of resin that fits on to a tap and makes pure water, by filltering through the resin beads. This is fine if you have a low tds reading at the tap, tds = total desolved solids.


Ro makes pure water by pushing  water through pr fillters then through a fine membrain taking out up to 98% of tds. then it goes through the resin. The resin in this system lasts a lot longer as most of the tds has been taken out before.


First thing to find out is what is your tds reading at the tap.

Are you on a water meter?


Regards Roy :)