powered by either a battery 712 or other non portable source as a matter of design choice since portability is less critical in a laboratory environment carousel drive motor 792 and plunger motor 704 are powered by the battery 712 or other non portable source as a matter of design choice valve 60 valve lever 404 lever ramp and syringe port opening 420 all function as described in fig4 a 4c a fundamental difference between the extraction system and the capturing system is that the extraction system does not need a fork or fork retraction motor plunger depression carriage 734 is driven by carriage screw 700 along dual slides 701 and 702 with plunger 70 in a retracted position as illustrated in fig7 fixed arm 736 extending from plunger depression carriage 734 is designed to pass through the slot openings in first plate 44 see fig3 located directly above each plunger collar 69 to depressingly engage plunger collar 69 as plunger motor retracts carriage 734 by way of lead screw 700 from position 700b along plane 34 b 34 to position 700a once the plunger is completely depressed plunger motor 704 repositions plunger depression carriage 734 back to position 700b so that carousel 32 can rotate a subsequent sample bearing syringe into place under fixed arm 736 as illustrated in fig4 b 4c each syringe position on carousel plate 46 has an opening 420 through which the sample passes when the syringe plunger is depressed with the valve in an open position when the plunger of a sample bearing syringe is depressed the sample escapes through syringe opening 50 and cylinder 415 flutes 430 433 out air sample port 98 and into a gas chromatography device not shown.