Thread: Shelf Life
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Old March 29, 2013, 03:15 PM   #2
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Join Date: December 20, 2008
Location: Somewhere on the Southern shore of Lake Travis, TX
Posts: 2,452
As long as it is kept dry, it should last virtually forever. Even if it gets dampened, it will work again once it drys out.
Potassium nitrate lasts nearly forever
Charcoal lasts nearly forever
Sulfur lasts nearly forever
A mixture of the three should last nearly forever.
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