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Analytical / Chromatography > Air Monitoring > Gas Sampling Bags
Air Monitoring

Gas Sampling Bags

On this page:
  Supel™-Inert Film Gas Sampling Bags
  Tedlar Bags 
  Supel-Inert Foil Gas Sampling Bags
  Method/Application Suitability
  Recommended Supel-Inert Sampling Bag by Compound/Analyte - Sulfur Compounds, VOCs
  Vacuum Bag Samplers

Gas sampling bags are recognized as cost-effective alternatives to Summa canisters for sampling volatile organic compounds (VOCs), and light and permanent gases. Recently, we have expanded our gas sampling bag line to include our Supel™-Inert film as a replacement for Tedlar®, and now offer Supel-Inert Foil bags for light and permanent gases. Tedlar is still available while supplies last. In addition to multiple film types, we also offer two different kinds of valves with our exclusive low-bleed Thermogreen™ LB-2 septa installed.

Product Release: Recently, DuPont had given notice to their customers stating that Tedlar PVF oriented film will no longer be supplied to the gas sampling bag market. This advanced notification has provided Sigma-Aldrich/Supelco with ample time to evaluate other films that meet or exceed Tedlar characteristics for air sampling applications. At this time, we are pleased to offer our customers our new Supel-Inert fluoropolymer film gas sampling bags with our exclusive Thermogreen LB-2 septa.

Gas Sampling Bags - Product Detail & Ordering Information
Supel-Inert Film Gas Sampling Bags (Tedlar replacement) - (Ordering Information) back to top

Supel-Inert film is a proprietary fluoropolymer developed specifically for air sampling applications as an alternative to Tedlar film.

Supel-Inert Gas Sampling Bags
Gas Sampling Bags		 Supel-Inert Push-Lock Valve
Push-Lock Valve (PLV)		 Supel-Inert Screw Cap Valve
Screw Cap Valve (SCV)

Key Features and Benefits:

  • The Thermogreen polymer has the industry's lowest bleed, preventing sample contamination from the septum.
  • Low VOC and sulfur background levels, no detectable background levels of DMAC (Dimethylacetamide) and phenol
  • Inertness properties similar to Tedlar for a wide range of compounds
    • Suitable for sampling and analysis for most VOC’s within 2 days and many sulfur* compounds for up to 24 hrs
    • Chemically inert to most acids, aliphatic and aromatic organic compounds, chlorinated solvents and alcohols
  • Abrasion resistant
  • Two valve fitting options available – Push-Lock Valve (PLV) and Screw Cap Valve (SCV); Stainless Steel Valve coming soon

*Not suitable for storing hydrogen sulfide

Properties Comparison Supel-Inert Film vs. Tedlar
Film Thickness Tensile
Strength		 Max. Oper.
Temp.		 Specific
Gravity		 Oxygen Permeability Water Vapor Permeability Carbon Dioxide Permeability
Supel-Inert 3 mil 6100 psi
(42MPa) 		150 ºC (302 ºF) 1.78 58 mL/(m² x d) 12-15 g/(m² x d) 172 mL/(m² x d)
Tedlar       2 mil 8000 psi
(55 MPa) 		204 ºC(400 ºF) 1.70 50 mL/(m² x d) 9-57 g/(m² x d) 172 mL/(m² x d)

Supel-Inert Foil Gas Sampling Bags - (Ordering Information) back to top
 

Supel-Inert foil gas sampling bags with Thermogreen septa are ideal for sampling low molecular weight compounds such as carbon monoxide (CO), carbon dioxide (CO2), and permanent gases

Key Features and Benefits:

  • The Thermogreen polymer has the industry's lowest bleed, preventing sample contamination from the septum.
  • Multilayer foil composition composed of two outer layers of aluminum film providing great barrier to gases permeating through the walls of the bag
  • Only foil bag material that can hold hydrogen sulfide for long periods, from 5 to 7 days
  • Sample stability up to 5 days for most recommended compounds (direct to applications below)
  • Chemically inert with moisture and light protection
  • Not recommended for low ppm VOC’s due to background levels
Supel-Inert Foil Gas Sampling Bag


Chemical Composition and Physical Properties of Supel-Inert Foil Gas Sampling Bags
Layer
Composition		 Tensile
Strength		 Specific
Gravity		 Max. Oper.
Temp.		 Permeability
Carbon Dioxide Oxygen Water Vapor
1. 0.002" Polyethylene
2. 0.0003" Aluminum Foil
3. Polyethylene
4. Aluminum (Metalized)
5. 60 gauge Nylon		 24 lbs/in 1.09 g/mL 87 ºC(188.6 ºF) 0.0005 cc/100 in²/day 0.0006 g/100 in²/day 0.0006 g/m²/day

Method/Application Suitability back to top

Method /Application Compounds Supel-Inert
Film		 Tedlar Supel-Inert
Foil		  
EPA 18 Gaseous Organic Compounds; VOCs by GC X X NR
NR = Not
Recommended
EPA 0040 Volatile Organic Compounds (VOCs) X X NR
EPA TO-3 Volatile Organic Compounds (VOCs) X X NR
EPA TO-12 Non-Methane Organic Compounds (NMOC) X X NR
EPA TO-14A/TO-15 mod. Volatile Organic Compounds (VOCs) by GC/MS X X NR
ASTM D5504-01/-08 Sulfur Compounds in Natural Gas & Fuels by GC X X NR
NIOSH 3704 Perchloethylene (Tetrachloroethylene) X X NR
NIOSH 6603 Carbon Dioxide NR NR X
OSHA ID-172 Carbon Dioxide in Workplace Atmospheres NR NR X
OSHA ID-210 Carbon Monoxide NR NR X
Landfill / Biogases (LFG) Hydrogen, Hydrogen Sulfide, Methane, Nitric Oxide, Oxygen NR NR X
Vapor Intrusion DCE, TCE, 1,1,1-TCA, PCE, Benzene, Toluene X X NR
Calibration Mixes Preparation of Standards /Gas Mixes X X X

Recommended Supel-Inert Sampling Bag by Compound/Analyte - Sulfur Compounds, VOCs back to top

Sulfur Compounds Recommended Bag Material  
Supel-Inert Film Supel-Inert Foil  
n-butyl mercaptan NS NS
NS = Not suitable
S = Suitable when used as recommended
R = Recommended
tert-butyl mercaptan R R
Ethyl mercaptan  S* R
Isobutyl mercaptan  S* NS
Isopropyl mercaptan  S* R
Methyl mercaptan  S* R
n-propyl mercaptan  S* R
Carbon disulfide  S* NS
Carbonyl sulfide R R
Diethyl sulfide  S* NS
Diethyl disulfide NS NS
Dimethyl disulfide NS NS
Dimethyl sulfide  S* NS
Ethyl methyl sulfide  S* NS
Hydrogen sulfide NS  R‡
2,5-dimethylthiophene NS NS
2-ethylthiophene NS NS
3-methylthiophene NS NS
Tetrahydrothiophene NS NS
Thiophene  S* NS
* Analyze compounds within 24 hours
‡ Analyze compounds within 48 hours 		 


VOCs Recommended Bag Material  
Supel-Inert Film Supel-Inert Foil  
Acetone NS S
NS = Not suitable
S = Suitable when used as recommended
R = Recommended
Acetonitrile NS S
Acrylonitrile NS S
Allyl chloride R S
Benzene R S
Bromoethane R S
Butyl acetate NS S
Ethyl acetate NS S
Carbon tetrachloride R S
Chloroform R S
Carbon dioxide R   R‡
Carbon monoxide R   R‡
1,2-dichloroethane R S
Dichloropropane R S
Ethylene R S
Heptane R S
Hexane R S
Isooctane R S
Isopropyl alcohol R S
Methane R   R‡
Methyl ethyl ketone NS S
Methylene chloride R S
Methyl tert-butyl ether R S
Octane R S
Perchloroethylene R S
Propylene R S
Propylene oxide R S
Tetrahydrofuran R S
Toluene NS S
1,1,1-Trichloroethane R S
Trichloroethylene R S
Vinylidene chloride R S
p-xylene NS S
‡ Analyze compounds within 48 hours  

Vacuum Bag Samplers back to top

Our bag samplers are designed so that the sampled gas flows directly to the bags inlet without first passing through a vacuum pump, which can contaminate your sample. The pump removes the air from the box creating a vacuum; and the negative pressure inside the box causes the air to enter the inlet and flow into the bag. The desired flow rate can be achieved by adjusting the flow control valve. Products not UL listed or EX rated.


  Supel-Inert Gas Sampler Model 1060 Supel-Inert Gas Sampler Model 1062 Supel-Inert Gas Sampler Model 1063
Specifications Model 1060 Model 1062 Model 1063
Features:
  • See through window
  • Carrying strap
  • Rechargeable battery
  • For fast sampling of stack and vent gases with zero cross-contamination.
  • See through window
  • *Automatic shut-off for 10 L bags
  • Can fill a 10 L bag in 2 minutes
  • Rechargeable battery
  • Controller can be programmed to draw samples sequentially; has battery backed memory
  • Optional 1 mL/min critical orifice is available to deliver low sampling rates
  • Rechargeable battery
  Battery charger not included, order separately
Dimensions:
(H x W x L) 		6 in. x 8 in. x 9.3 in.
(15.2 x 20.3 x 23.6 cm) 		9 in. x 14.6 in. x 21.7 in.
(22.9 x 37.1 x 55.1 cm)		 9 in. x 14.6 in. x 21.7 in.
(22.9 x 37.1 x 55.1 cm)
Weight: 5 pounds (2.3 kg) 17 pounds (7.7 kg) 27 pounds (12.2 kg)
Recommended for: Single 1-2 Liter gas sampling bags Single 1-10 Liter gas sampling bags Six 1 Liter gas sampling bags
Direct Vacuum Force: 162 inches (411 cm) of water *27 inches (68.6 cm) of water 297 inches (754.4 cm) of water
Flow Rate: 100-1900 mL/min; installed needle valve for coarse flow rate control 1-5 L/min; installed rotameter valve for coarse flow rate control 1-5 L/min; installed needle valve for coarse flow rate control
Critical Orifice-1 mL/min: 24667
Filter, Stainless Steel, 40 µm: 24672
Sample Inlet: Accepts any ¼” OD Inert Tubing Accepts any ¼” OD Inert Tubing Accepts any ¼” OD Inert Tubing
Running Time: Up to 8 hours Up to 8 hours Up to 8 hours
Power Requirements: 12 V battery, 1.3 A/hrs 12 V battery, 5.2 A/hrs 12 V battery, 5.2 A/hrs
Charge Time: 9 hours 9 hours 9 hours
Sampler: 24622-U 24623 24647
  Battery charger not included, order separately
Battery Charger (110V): 24643 (1.3 A/hrs ) 24644 (5.2 A/hrs) 24644 (5.2 A/hrs)
Universal Charger (110V/240V): 24697-U 24697-U 24697-U
Replacement Battery: 24635 (1.3 A/hrs ) 24636 (5.2 A/hrs) 24636 (5.2 A/hrs)
*Model 1062 contains a controlled leak to prevent the gas sampling bag from overfill.

Trademarks
Tedlar - E.I. du Pont de Nemours & Co., Inc.
Supel, Thermogreen - Sigma-Aldrich Co. LLC