Quote Originally Posted by totalamateur View Post
.....Without the canned air, what do you evacuate the developer stock solution bottle with? (no butane please)......
I originally setup my darkroom with a remote compressor with a filtered and regulated outlet near my enlarger.

But a few years ago I bought a tank of Nitrogen and regulated it down to about 10 psi with a hose and "blow gun" adapter. Now I can blow away dust, and give a squirt into opened bottles of chemistry. In over a year, I have not yet refilled the Nitrogen tank.