Tedlar® PVF Sampling Bags PTFE On/Off valve, 1,6L Back Catalog number: TDLC31Z_1.6L Availability: In the manufacturer's stock Price on request - + Recommended RMK-0005 RoutMainten kit - TT24-7 Price on request NDV31_5L DEVEX sampling bags with PTFE straight and septum valve with OD 6mm, 5L Price on request U-COV45 O-Ring, low-emission, 5.92mm i.d. pk10 (6mm Difflo Price on request