Carbon dioxide is not inert. Anyway, I found that if I put a teaspoon
of solvent on top of the can before sealing it back helps. Before the
lid is replaced, clean the threads to create a good seal. For
paint-type tops, I use a rawhide mallet and inspect the rim to ensure
it is seated properly. When there is a little finish left in the can,
it makes sense to transfer it to a smaller container or just toss it.
I wonder how well carbon dioxide would work on its own? There the easy
home version they taught us in Cub Scouts: vinegar and baking soda.
Since it's heavier than air, and oxygen-displacing, you can place a
couple of tablespoons of baking soda in a measuring cup, tilt it over
the desired container, and add enough vinegar to soak the baking soda
without running over. The gas vapor is visible, and will sink right
into the target container.
I don't know how effective it is, though. I haven't had reason to try
Yep, I have a BIG tank of welding ARGON in the shop, and use that
instead of paying for BLOxygen in those tiny cans
Works get just as it is, and appears to work just as well as Bloxygen
Key is to dispense slowly, and to use an extension that lets you put
the argon entry AT the surface of the paint/etc. Since argon is
heavier than air, it will displace the air as you introdce it
In fact, Steve Zawalick of Ironwood Designs -- the guy who runs (or at
least did at one time run) the company that makes and distributes
Bloxygen to retail outlets -- adapted the product directly from that
used to protect wine.
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