Thermal Desorption Sorbent Tubes
For Sub-ppb VOC Measurements.
SKU
TDSORBTUBES
SKC Inc offers single and multiple-bed Thermal Desorption Tubes that meet the requirements of EPA Method TO-17 for the determination of sub-ppb VOCs in ambient air.
SKC Thermal Desorption Tubes are designed for compatibility with Perkin Elmer or Markes International thermal desorbers.
To be suitable for thermal desorption, sorbents must meet exacting specifications that include:
- Low contaminant background
- High thermal stability
- Sufficient adsorptive strength to retain components of interest and to release them quickly when heat is applied
For more information on the Thermal Desporption Sorbent Tubes, contact your local Air-Met office.
- Undiluted Sample:
- Because a solvent is not used, the collected sample is not diluted and, in most cases, analytical recovery is so close to 100% that desorption efficiency corrections are not required.
- Improved Analytical Sensitivity:
- Thermal desorption techniques offer the advantage of greatly improved analytical sensitivity.
- Reusable
| Anasorb 747 | |
|---|---|
| Mesh Size: | 20/40 |
| Surface Area: | 980m2/gm |
| Notes: | This beaded active carbon has the capacity for organic vapours similar to petroleum-based and coconut-shell charcoals. It also can be used to sample nonpolar organic compounds. |
| Anasorb GCB1 | |
|---|---|
| Mesh Size: | 20/40 |
| Surface Area: | 100m2/gm |
| Notes: | Anasorb Graphitised Carbon Black 1 (GCB1) has a moderate surface area and is equivalent to Carbopack B (60/80). This sorbent has proven to be valuable for sampling compounds of intermediate to high volatility. |
| Anasorb GCB2 | |
|---|---|
| Mesh Size: | 20/40 |
| Surface Area: | 10m2/gm |
| Notes: | This sorbent has a low surface area and is equivalent to Carbopack C (60/80). Anasorb GCB2 is useful in collecting semi-volatile organic compounds (SVOCs). |
| Carbosieve S-III | |
|---|---|
| Mesh Size: | 60/80 |
| Surface Area: | 975m2/gm |
| Notes: | This carbon-based molecular sieve has properties similar to the obsolete Anasorb CMS and replaces it in SKC thermal desorption tubes. Carbosieve S-III has a high capacity/breakthrough volume for small molecules and is moderately hydrophilic. It can be used for the lower boiling compounds such as halogenated hydrocarbons and alcohols. |
| Chromosorb® 106 | |
|---|---|
| Mesh Size: | 60/80 |
| Surface Area: | 700-800m2/gm |
| Notes: | A porous polymer sorbent, Chromosorb 106 is used to trap low-boiling hydrocarbons, benzene, labile compounds, and volatile oxygenated compounds. This hydrophobic sorbent is the least polar polymer in the Chromosorb family and is functionally similar to Anasorb 727. |
| Tenax® TA | |
|---|---|
| Mesh Size: | 20/35 or 35/60 |
| Surface Area: | 30-35m2/gm |
| Notes: | Tenax TA is a traditional sorbent (porous polymer) for trapping medium to high boiling compounds; it is especially useful for low concentrations because of its low background. Tenax TA is hydrophobic and is suitable for use in EPA Method TO-17 or IP-1B and other thermal desorption applications. |
| Tenax® GR | |
|---|---|
| Mesh Size: | 20/35 |
| Surface Area: | 35m2/gm |
| Notes: | This Tenax/graphite composite extends the range of Tenax to lower boiling compounds. It retains the ability of Tenax to be cleaned easily to a very low background and is widely used in thermal desorption applications. |
| Carbograph 5 TD | |
|---|---|
| Mesh Size: | 20/40 |
| Surface Area: | 560m2/gm |
| Notes: | This is a medium strength sorbent for collecting hydrocarbons in the boiling point range of 50 to 150 C. It is hydrophobic and has low artefact formation. |
- Collection of organic compounds for thermal desorption
