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