FlexFoil Grab Bags

For Sampling Low Molecular Weight Compounds and Inert Gases

Collect low molecular weight compounds and inert gases not stable in Tedlar Stronger than Tedlar Strong, evenly sealed, 4-ply foil Available in 1, 3, 5 and 10-liter capacities Up to 5-day sample stability. See References section below for storage stability studies. Available with single all-in-one septum and hose/valve stainless steel or polypropylene fitting Custom bags available Minimal adsorption

Polypropylene or Stainless Steel Fitting

FlexFoil Grab Bags Product Data Bulletin (PDF)

FlexFoil Grab Bags with Polypropylene Fitting 245 Series Operating Instructions (PDF)

FlexFoil Grab Bags with Stainless Steel Fitting 245 Series Operating Instructions (PDF)

Stability of FlexFoil Bags with Methane (PDF)

Stability of FlexFoil Bags with Nitric Oxide (DOC)

Analysis of FlexFoil Bags for Carbon Monoxide, Carbon Dioxide, and Hydrogen (PDF)

FlexFoil Bags FAQs

SKC FlexFoil® Grab Bags provide light and moisture protection for low molecular weight compounds such as hydrogen that are unstable when collected into standard Tedlar bags. Use a low flow air sample pump with exhaust port, such as the SKC 222 Sample Pump (Cat. No. 222-3) or Grab Air Sample Pump (Cat. No. 222-2301), with SKC FlexFoil Grab Bags.

The FlexFoil Grab Bag Advantage

Prevent permeation: Four layers of foil material prevent permeation in and out of the bag.

Inert: The inside surface is inert, minimizing absorption and adsorption of compounds.

Strong: SKC FlexFoil Grab Bags have strong, evenly sealed seams making them ideal for mailing or shipping to a laboratory for analysis. The four-layer foil material is stronger than Tedlar.

Light-protective: Protect light-sensitive compounds without the use of an outer container or black Tedlar.

 

FlexFoil Grab Bag Applications*

• Pollution level monitoring in work areas
• Site sampling and mobile surveys
• Transferring calibration gas from lab to instrument
• Preparing calibration mixtures
• Assessing exposure from leaks and spills
• Indoor air studies (CO, CO₂)
• Carbon dioxide in workplace atmospheres (OSHA ID-172)
• Carbon dioxide (NIOSH 6603)
• Carbon monoxide (OSHA ID-210 ‡)

*	FlexFoil Grab Bags are not suitable for collecting many VOCs found to be stable in Tedlar, FlexFilm, or Teflon.
‡	Method specifies 5-layer foil bags. SKC 4-ply FlexFoil has been shown to hold 100 ppm CO for 5 days without loss. See Analysis of FlexFoil Bags for Carbon Monoxide, Carbon Dioxide, and Hydrogen (PDF)

 

About FlexFoil Grab Bag Fittings

SKC FlexFoil Grab Bags are available with an easy-to-use single septum fitting made of stainless steel or polypropylene. Choose the fitting that best fits your application.

	Stainless Steel Fitting: This unique, patented fitting combines the hose/valve and septum fittings into one easy-to-use unit. Fitting construction prevents leakage and ensures that the sample is exposed to only inert materials. This fitting reduces the cost and overall weight of using stainless steel when stainless steel fittings are specified.
	Polypropylene Fitting: The industry standard, this patented lightweight, inert fitting combines the hose/valve and the septum holder into one compact fitting.

FlexFoil Bags FAQs

 

Ordering Information

FlexFoil Grab Bags* with Single Stainless Steel Septum Fitting

Internal Size - inches † (centimeters)	Maximum Capacity (L)	Qty.	Cat. No.
7 x 7 (17.7 x 17.7)	1	ea	245-01A
7 x 7 (17.7 x 17.7)	1	5	245-01
9.5 x 10 (24.1 x 25.4)	3	ea	245-03A
9.5 x 10 (24.1 x 25.4)	3	5	245-03
12 x 12.5 (30.4 x 31.7)	5	5	245-05
11.75 x 22 (29.8 x 55.9)	10	5	245-08
Replacement Septa		pk/10	233-01-RS

†	1/8-inch tolerance
*	FlexFoil Grab Bags are not suitable for collecting many VOCs found to be stable in Tedlar, FlexFilm, or Teflon.

Ordering Information

FlexFoil Grab Bags* with Single Polypropylene Fitting‡

Internal Size - inches † (centimeters)	Maximum Capacity (L)	Qty.	Cat. No.
7 x 7 (17.7 x 17.7)	1	ea	245-21A
7 x 7 (17.7 x 17.7)	1	5	245-21
9.5 x 10 (24.1 x 25.4)	3	ea	245-23A
9.5 x 10 (24.1 x 25.4)	3	5	245-23
12 x 12.5 (30.4 x 31.7)	5	5	245-25
11.75 x 22 (29.8 x 55.9)	10	5	245-28
Replacement Septa		pk/10	232-01-RS

†	1/8-inch tolerance
*	FlexFoil Grab Bags are not suitable for collecting many VOCs found to be stable in Tedlar, FlexFilm, or Teflon.
‡	U.S. Patent No. 4,915,356

Sample Pump for Bag Sampling

Description	Cat. No.
222 Series Pump with Charger, 50 to 200 ml/min, with single 115 V charger, CE marked, UL listed	222-3KC
222 Series Pump with Charger, 50 to 200 ml/min, with single 230 V charger, CE marked, UL listed	222-3KCB
Grab Air Pump, 1000 ml/min, with 9-V alkaline battery, not CE marked, not intrinsically safe	222-2301

References:

Stability of FlexFoil Bags with Methane (PDF)

Stability of FlexFoil Bags with Nitric Oxide (DOC)

Analysis of FlexFoil Bags for Carbon Monoxide, Carbon Dioxide, and Hydrogen (PDF)

FlexFoil Bags FAQs

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For custom applications, SKC will manufacture bags to meet your specific requirements. Download the Custom Sample Bags Order Form in PDF format. If you need the PDF reader, click here to go to the Adobe website and download the reader. Complete the form and fax it to your SKC representative.

Contact your SKC representative for more information or call the SKC Sales Department at 724-941-9701 for a quotation on custom bags.

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This page was last modified April 14, 2008