Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: HEDPOL32_2L Availability: In the manufacturer's stock Price on request - + Recommended U-T19PAH-2S PAH cold trap, UNITY 2/xr and TD-100/xr Price on request RMK-0020 Routine Maintenance Kit: Tube conditioner (TC-20) Price on request M-SPC05-250 Collar spacer, alum 5mm, for M-CTE250I,pk 4 Price on request