Products

       New DEVEX (multi-layer) Gas Sampling Bags(for exporting)

      Our company Dalian Hede Technologies and professional companies together researched anddeveloped DEVEX with international advanced technology specifically for making high quality gas sampling bags. DEVEX is very low background, little contamination and good elasticity , can satisfy foreign customers high requirements.

      New DEVEX film is composed of total 11 layer films (PET, PA, Aluminum, PE, etc) with thickness around 75um thinner than Aluminium-foil (multi-layer) gas sampling bags and better elasticity, can't become hard-brittle when cold like Aluminium-foil (multi-layer) gas sampling bag, it has superb strength and low permeability, meanwhile it possesses excellent chemical inertness and stability. Especially when Aluminium-foil (multi-layer) gas sampling bag cannot meet the requirements and using fluorine polymer cost too much, DEVEX gas sampling bag is the best choice. The overall property of DEVEX film exceeds that of PVDC film such as Saran®.During lamination, environmental-friendly adhesive is used to eliminate solventresidue such as benzene, acetone and esters. DEVEX gas sampling bags have a wide range of applications including hydrocarbons, CO, CO2, nitrogen, hydrogen, oxygen, hydrogen sulfide, nitrogen oxides and halogens. Butit is not recommended to use for hydrogen sulfide, nitrogen oxides and halogensat ppb level. Compared to fluorine polymer film bags, DEVEX bags have low price, and can be used in VOCs assessment. Being detected by authoritative organizations DEVEX film is superior to Aluminium-foil multi-layer film, so DEVEX gas sampling bags are of the most value for money at home and abroad, and widely used by customers abroad.

Features

 

composed of total 11 layer films

very low background,little contamination and good elasticity 

superb strength and low permeability

excellent chemical inertness and stability

wide range of applications

low price and good value for money

Normal Aluminium-foil composite film is glued of solvent adhesive,can volatile alarge number of organic volatile impurities that can pollute the sample gas no doubt, DEVEX film is glued of environmental protection adhesive,precipitationamount of organic volatile chemicals(VOCs)by inner layers is extremely low,thereby avoid sample gas inside the bag being polluted and prevent the interference of analysis data. The organic solvent remnant  amount of  DEVEX film is 0.1mg~0.3mg/㎡, which is 5% of Aluminium-foil composite film, so DEVEX film is the ideal high performance  substitute for Aluminium-foil composite film.

Standard Devex Gas Sampling Bag Sizes:0.5L,1L,2L,3L,4L,5L,8L,10L,15L,20L,30L, 40L~6000L or customized size.