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