Restek, 22968, Multi-Layer Foil Gas Sampling Bags, 40 L, 24"x 24.5" w/Polypropylene Combo Valve & Septum, 1 Eyelet, 5-pk.

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. All our multi-layer foil bags feature a polypropylene combo valve with hose connection to fit 3/16" ID tubing and syringe port with replaceable septum. A single eyelet provides handling convenience. Physical Specifications Composition: 4-layer— 60 gauge nylon (outer layer); Polyethylene; 0.0003" aluminum foil; 0.002" polyethylene (inner layer) Thickness: 0.004" Tensile Strength: 19 lb/in Max. Operating Temp.: 82 °C (180 °F) Specific Gravity: 1.09 g/mL Oxygen Permeability: 0.0078 cc / m 2 / day @ 0% RH, 23 °C Water Vapor Permeability: 0.0078 g / m 2 / day @ 90% RH, 40 °C Carbon Dioxide Permeability: 0.0078 cc / m 2 / day
Features & Benefits
Good stability for low molecular weight compounds, such as methane, CO, CO
2
, and permanent gases.
Chemically inert with light and moisture protection.
Not recommended for low ppm VOCs due to background levels.
Protective 4-layer barrier minimizes gas permeability:
60 gauge nylon (outer layer)
Polyethylene
0.0003" aluminum foil
0.002" polyethylene (inner layer)
Maximum operating temperature: 82 °C (180 °F).