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PVDF Gas Sampling Bag with PTFE Valve Septum Port Syringe Sampling+PTFE Fitting 0.5L (air sample bag), Find Details and Price about Sample Bag Air Bag from PVDF Gas Sampling Bag with PTFE Valve Septum Port Syringe Sampling+PTFE Fitting 0.5L (air sample bag) - Shanghai Sunrise Instrument Co., Ltd.