I know that many use the cans for blowing dust off negatives and other house cleaning purposes, but does anyone use the cans of pressurized gas to displace regular air?
When you open up a chemical, it has a shelf life of only a few months, does displacing the air (oxygen) with a spray of ethylene chloride (if I remember right) prolong the shelf life of the chemical?
Is there any combination that I should avoid? I know to keep the can upright.
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