I sent the following email to Purolite ( resin company ) and got a reply back ( below the first email ):
Hi Brian,
I spoke to one of your collegues earlier today regarding the use of Isopropanol Pure Alcohol for Pure Water Window Cleaning.
As you may be aware alot of Window Cleaners use pure water to clean and some use a little Isopropanol added to the water to help with the cleaning process but the majority of Window Cleaners have their water already filtered before it goes into their storage tanks in their work vehicles and then add a little Isopropanol into their water tanks.
My problem is I filter onboard with 2 DI vessels holding Purolite MB400 Mixed Bed Resin as my TDS/PPM is only 24 here near ********. So I am worried that if I put Pure Isopropanol into my tank it will be removed my the Resin before reaching the windows.
To you this question may seem stupid but to me I just dont know. Will the Resin remove or absorb the pure alcohol or because its pure does it have nothing to remove?
I know that this alcohol is pure when read with a PARTS PER MILLION TDS reader but I was concerned that the Resin may be removing PARTS PER BILLION, therefore resulting in the alcohol being removed too. Do you follow?
Thanks, for your help, Luke ********, ***********
Reply
Dear Luke,
Sorry for the slow reply. I would expect there would be some hold up on the resin but surprised if there was complete removal as the alcohol is not ionized and therefore will not be captured by conventional ion exchange. However with all organic materials they have some affinity for the polymer backbone of the resin which is styrene based so some reduction should be expected.
Hope this is of help.
Regards,
Brian