Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: HEDTDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended C-HSINS2-4 Spacer for Agitator, to accommodate for 2mL vials, pk 4 Price on request P-CPU10 Unions, for VOC-Mole cap assembly,pk10 Price on request OST-201-3421 Tube gas sampling 350, nozzle (GL14), septum Price on request