Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L Availability: In the manufacturer's stock Price on request - + Recommended T-12AM Focusing trap, Air Monitoring, for TT24-7 Price on request 1233 BALLOONS FOR GAS SAMPLING, 4Liters Price on request M-DSK15-250 Spacer disc, alum, 1.5mm, for M-CTE250I,pk 24 Price on request