Quote:
Originally Posted by airshock
Isabourin, I realize this tread is a few days old but anyways, a old painter fellow told me once, (older than me, and I think he was normal) that if you have a mig welder with argon gas (compressed tank) just spray a few fumes into the can of hardener, shut the lid quickly and it will last for years. Another note, I have had hardener last for over a year in a old sealed fridge, just remember to shake it well before using. Just my 2 cents.
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Some places sell canned Argon for this purpose.
I have only had a couple cans go bad and that was House of Kolor catalyst. Their bottle type containers are cheap as hell. Heck, the el cheapo brands seal better when re installed! LOL I have stretched the shelf life out for longer than I'll admit here
just by ensuring their is a good seal and looking at the clarity of the clear as Landsbro pointed out. If it is hard or clumpy, toss it and if it is clear like distilled water, it's good to go.