You can radically mitigate the issue by using a secondary container for that which you'll use in a week or so, and only open the quart/gallon to dispense to working container.
I have dry argon in my shack to purge gas space in any container that is hygroscopic or oxidizes in presence of atmosphere. I use 99.9 for cleaning all boards (flush after "scrub"). Where allowed, I follow up with RODI water flush and forced air drying. Clay Autery KY5G > > On Jul 15, 2021 at 06:51, Louandzip via Elecraft <[email protected]> > wrote: > > > 99.9% isopropanol will only be 99.9% when you first open the bottle. It > starts aggressively absorbing water from the atmosphere as soon as exposed. > > Lou W7HV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

