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-HSAG-20 HiSorb Agitator, accommodates 16 vials (20mL) Price on request U-COV07 O-Ring, low-emission, size007, pk 10 (TD autosampl Price on request M-MCTL250 Sample Pan Removal Tool, for high temp Micro-chamber Price on request