Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: TDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended TDLC-S Repalcement septum for Tedlar bag TDLC31Z Price on request P-CP010 VOC-Mole cap assembly,pk10 Price on request M-MCAL20 Disposable dish, alum, 20mL,pk100 Price on request