| http://www.w3.org/ns/prov#value | - The chamber 50 and the pouch are first evacuated, then filled with a non-corrosive gas such as dry nitrogen, carbon dioxide, argon, helium, neon, etc., and finally partially evacuated prior to being sealed along the fourth side by sealing members 52 to form a seal 54, FIG. 7, which completes the seal of the pouch.
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