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01494 563377

Back to: ALTEF Gas Sampling Bags

PTFE Faced Silicone Replacement Septum, 4 mm diameter

Product Code: 22104

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Replacement Septum for Tedlar, ALTEF, and Multi-Layer Bag Valves, Pack of 10, 4mm diameter, PTFE faced silicone
Please call the sales team on 01494 563377 or email for pricing details
tedlarbags_so_air
altef_ph_so_air
multifoil_ph_so_air

Description

Sampling bags are a low-cost whole air sampling device for high level 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 film type appropriate for your application. All our 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.

  • 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.
  • 5-layer protective barrier minimizes gas permeability.
    - 60 gauge nylon (outer layer)
    - Metalized aluminum
    - Polyethylene
    - 0.0003″ aluminum foil
    - 0.002″ polyethylene (inner layer)

Physical Specifications:
Composition: 5-layer
Thickness: 0.005″
Tensile Strength: 24 lbs/inch (CD)
Max. Operating Temp.: 87 °C
Specific Gravity: 1.09 g/mL
Oxygen Permeability: 0.0006 cc/m2/day
Water Vapor Permeability: 0.0006 g/100 square inches/day
Carbon Dioxide Permeability: 0.0005 cc/100 square inches/day

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