Repalcement septum for Tedlar bag TDLC31Z Back Catalog number: HEDTDLC-S Availability: In the manufacturer's stock Price on request - + Recommended U-T20PAM-2S Focusing trap, Photochemical Assessment Monitoring Stations (PAMS), for UNITY-xr, TD100-xr, Centri Price on request T-2HD CW agents (in particular HD) cold trap, TT24-7 Price on request C-EZVOCAK Easy-VOC accessory pack Price on request