Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Back Catalog number: HEDTDL31_5L Availability: In the manufacturer's stock Price on request - + Recommended T-2HD CW agents (in particular HD) cold trap, TT24-7 Price on request M-MCTL250 Sample Pan Removal Tool, for high temp Micro-chamber Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request