Is it ok to toss the Puffco Plus chamber in some ISO?
I want to get the black out of the bottom of the chamber.
Qtips clean the walls well enough, but do nothing to that nasty black circle in the bottom of the chamber.
I'm thinking a quick bath in 99% ISO and a clean water rinse would take care of it. Or maybe the PBW cleaner that is so highly regarded for glass pieces?
Not to worry, I can assure you that it sounds like your Plus chamber is functioning as intended. It is normal for the bottom of your Plus chamber to blacken or darken over time, just as a ceramic nail typically would after some use. This should not in any way affect the overall performance of the chamber itself.
This can be done with the wipe of a cotton swab dipped in ISO.