Good evening, all! I personally would be very sceptical, indeed, of ANY w/s mask in a closed loop system. It is asking for reduced lifetime of carbon and/or DI columns. I would suggest open loop pre-cleaning and use the closed loop just to polish off. Alternatively, a membrane microfilter before the first column, but this will require frequent backwash de-clogging. Brian On 17.05.2013 16:08, Steve Gregory wrote: > Morning all, > > Continuing on with the masking thread, I know Techspray has a water soluble mask that is supposed to be compatible with closed-loop water treatment systems, are there any others out there? > > Any pros/cons of using them? > > As always, thanks in advance! > > Steve > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > For more information please contact helpdesk at x2960 or [log in to unmask] > ______________________________________________________________________ > ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________