SGE 007200 Gas Tight 500F-GT 500µL MicroVolume Fixed Needle Syringes are constructed from borosilicate glass, PTFE plunger tips and Kel-F luer cones where applicable. Gas Tight Syringes are assembled with an interference fit between plunger tip and barrel to effect the gas sealing properties of the syringe. Plungers for these syringes are interchangeable. Gas Tight Syringes can be autoclaved but the plunger should be removed. These syringes are suitable for both liquid and gas samples for maximum inertness. Also suitable for manual and dispenser/diluter applications.