Product Name: Gas Sampling Bags (aluminum Multi-film) 0.5L Model NO.: ES-500ML-N62P Material: Aluminum Gas Sampling Bags Reactant State: Gas Disposable: Non-Disposable Trademark: E-Switch Transport Package: Paper Box Specification: 500ML Origin: Made in China HS Code: 39232900 Product Description Gas Sampling Bags (Aluminium Foil Compound Membranefilm )capacity:500mLValve:polypropylenebag film: Aluminium Foil Compound Membranefilmvalve number:twosmall paper box:53*34*17CMone box with 120pcs,500ML aluminum gas sample bags.bigger paper box:53*35*32 CMone box with 240pcs ,500ML aluminum gas sample bags.uint price:1.6USD,FOB shanghai .Band:E-Switch, easy to use valve.Made in china ,manufacture Shanghai Sunrise Instrument Co.,Ltd.Good quality, low price!we offer sizes from 5M L to 100 L.Available with polypropylene (we get patent) or PTFE valve;choose bags with a septum fitting for syringe sampling or standard spiking.Maximum operating temperature: 100 °C with polypropylene valves .