Tedlar® PVF Sampling Bags PTFE On/Off valve, 0,3L Back Catalog number: TDLC31Z_0.3L Availability: In the manufacturer's stock Price on request - + Recommended M-SPC05-250 Collar spacer, alum 5mm, for M-CTE250I,pk 4 Price on request M-TCN04 O-Ring, size 007, and spacer,pk 6 Price on request P-FORMR Brass impact former Price on request