Gas Sampling Bags (Tedlar pvf film )
capacity:2L 
Valve:polypropylene
bag film: PVF, tedlar brand
valve number:one
small paper box:53*34*17CM 
one box with 60pcs,2L pvf gas sample bags.

bigger paper box:53*35*32 CM
one box with 120pcs ,2L pvf gas sample bags
uint price: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 2000 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 or 202 °C (397 °F) with PTFE valves.



Sampling bags are low-cost, whole-air sampling devices for VOCs and permanent gases. Several EPA, NIOSH, and OSHA methods exist for bag sampling for a variety of applications: stationary sources emissions; workplace atmospheres; ambient, indoor air quality; and breath analysis. Choose the valve type appropriate for your application. A single eyelet provides handling convenience.
Physical Specifications
Composition: polyvinyl fluoride (PVF) polymer resin
Thickness: 0.002"
Tensile Strength: 8,000 psi
Max. Operating Temp.: 100 °C  with polypropylene valves or 202 °C (397 °F) with PTFE valves
Specific Gravity: 1.7 g/mL
Oxygen Permeability: 50 cc/m2/day
Water Vapor Permeability: 9-57 g/m2/day
Carbon Dioxide Permeability: 172 cc/m2/day