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1 <br /> 1 <br /> ' BAT ENVIRO PROBE SCHEMATIC <br /> (Not to scale) <br /> ' Septum <br /> Drive casing <br /> (minimum <br /> inside diameter <br /> of 1 inch) <br /> Vial and needle <br /> assembly lowered <br /> Stainless steel—f to Enviro Probe <br /> ' center rod on wireline <br /> Vial housing <br /> ' i Glass sampling <br /> Threads for vial <br /> cross-over to <br /> ' drive casing O-ring Vial cap with <br /> septum <br /> Double-ended <br /> ' hypodermic <br /> needle assembly <br /> Stainless steel <br /> screen Septum of <br /> Stainless steel (20 micron Enviro Probe <br /> ' retractable sleeve pore size) <br /> O-ring 4— Stainless steel <br /> retractable sleeve <br /> Stainless steel Stainless steel <br /> drive point screen <br /> ' �—Stainless steel <br /> VVdrive point <br /> ' Enviro Probe: Enviro Probe: Sample Collection <br /> Closed Position Open Position Configuration <br /> 1 <br /> ' 5oms(PF)011 (Aevisetl 1295) <br />