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 U-COV10 O-Ring, low-emission,size 010, pk10(e2/e3 systems) Price on request RMK-0027 Routine Maintenance kit, tube based systems, no co Price on request POL32_2L Polyester gas sampling bag with PTFE dual-valve, 2L Price on request