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 M-MCAL50 Disposable dish, alum, 50mL,pk100 Price on request T-8MAT Materials emissions cold trap, TT24-7 Price on request C-VAC-PIN Vacuum closure Pin Price on request