As shown in FIG 3, a sealing means is provided which includes an O ring 18 which cooperates with {HEAD ~ the flange} 20 of {TAIL ~ an Eppendorf tube} 23 
of
As shown in FIG 3 , a sealing means is provided which includes an O ring 18 which cooperates with { HEAD ~ the flange } 20 of { TAIL ~ an Eppendorf tube } 23
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 OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH