Gas Sampling Bag Multi-Layer Foil 25L 18" x 24" w/polypropylene combo valve & septum 1 eyelet 5-

Multi-Layer Foil Gas Sampling Bags

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 / m² / day @ 0% RH, 23 °C
Water Vapor Permeability: 0.0078 g / m² / day @ 90% RH, 40 °C
Carbon Dioxide Permeability: 0.0078 cc / m² / day

Features & Benefits

• Good stability for low molecular weight compounds, such as methane, CO, CO₂, 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).