a first duct extending from said first inlet port and terminating in {HEAD ~ said interior} of said container below {TAIL ~ a surface} of said first liquid reservoir; whereby said first liquid reservoir establishes a first liquid seal between said first gaseous environment and said external gaseous environment 
a first duct extending from said first inlet port and terminating in { HEAD ~ said interior } of said container below { TAIL ~ a surface } of said first liquid reservoir ; whereby said first liquid reservoir establishes a first liquid seal between said first gaseous environment and said external gaseous environment
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