Features
- Meets specifications of U.S. EPA 325
- 3.5 x 0.25-inch OD (Sized for Perkin Elmer and Markes International Thermal Desorbers) stainless steel tube deactivated with SilcoNert® 2000
- Pre-conditioned Carbopack® X or Anasorb GCB1 sorbent held between two 100-mesh stainless steel screens
- Brass Swagelok® screw caps with PTFE ferrules
- Diffusion cap
- Unique identification number and bar code
- Sampling arrow indicator
- Benzene uptake rate of 0.67 ml/min
- Ideal for sampling over two-week sampling periods required in EPA 325
- Use to determine average benzene concentration in the range of 0.5 to 500 µg/m3 over a two-week periods
- Analyze by GC-FID or GC-MS as specified in EPA 325B
- Reusable
- Weatherproof tube shelter available
- Establish baseline/manage exceedances for benzene and other HAPs and VOCs. See Technical Note: Sampling Rates for Benzene and Other VOCs Using the SKC Passive TD Tube(PDF)
Specifications
Performance Profile
| Sorbent |
Carbopack X, Anasorb GCB1 (see Reference) |
| Tube Material |
Stainless steel coated with SilcoNert 2000, sealed with brass Swagelok screw caps fitted with PTFE ferrules |
| Uptake Rate |
Benzene 0.67 ml/min |
| Dimensions |
3.5 x 0.25-inch OD (Sized for Perkin Elmer and Markes International Thermal Desorbers) |
| Analysis |
GC-FID or GC-MS (EPA 325B) |
Note: All tubes are conditioned and quality control tested to assure low background.
Reference
McClenny, W.A. et al., “24 h Diffusive Sampling of Toxic VOCs in Air onto Carbopack X Solid Adsorbent Followed by Thermal Desorption/GC/MS Analysis–Laboratory Studies,” J. Environ. Monit., Vol. 7, Issue 3, 2005, pp. 248-256
Technical Note: Sampling Rates for Benzene and Other VOCs Using the SKC Passive TD Tube (PDF)
Federal Register, Vol. 80, No. 230, 40 CFR Parts 60 and 63, www.gpo.gov/fdsys/pkg/FR-2015-12-01/pdf/2015-26486.pdf
EPA Method 325A, Volatile Organic Compounds from Fugitive and Area Sources, (sampling), https://www3.epa.gov/ttn/emc/promgate/m-325a.pdf
EPA Method 325B, Volatile Organic Compounds from Fugitive and Area Sources, (analysis), https://www3.epa.gov/ttn/emc/promgate/m-325b.pdf
