Canister sampling accessories
Air sampling kit- stainless steelC-ASK1168SS
When working with canisters for time-weighted-average (TWA) grab-sampling of ambient air, air sampling kits are required to ensure a valid qualitative sample is obtained. The integrated air sampling kits available via Markes are easy to assemble in the field, and incorporate all necessary hardware for sampling over extended periods.
- Compatible with 1, 3, 6, or 15 L canisters
- Connects directly to canister valve inlet via ¼″ compression fitting
- Sample inlet design minimises water entry into sampling train
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Air sampling kit- stainless steel
1hr/1L or 8hr/6L
Air sampling kit- SilTek
1hr/1L or 8hr/6L
Available in stainless steel and inert-coated stainless steel (Siltek®). When the Siltek-treated finish kit is used in conjunction with SilcoCan® (inert-coated stainless steel canisters), the components ensure accurate sampling of active compounds such as low-level volatile sulfur compounds.
Each integrated air sampling kit contains:
- Rain cap
- Sampling inlet/train
- Filter (frit)
- Critical orifice
- Flow controller
The sampling inlet/train follows the guidance in US EPA Method TO-14A/15 to allow:
- Elevated-level sampling, which helps to minimise entry of dust particles into the canister in areas of heavy traffic
- The entrance of the inlet to face downwards, to prevent raindrops from entering
The replaceable filter (frit) protects the orifice and valve from airborne particulates that could obstruct the flow path and alter the flow rate during sampling or (in a worst-case scenario) block the flow path and stop sampling altogether.
The critical orifice restricts flow to a specified range, allowing the canister to fill at a certain rate over a specified time period with the assistance of a flow controller.
The flow controller maintains a constant flow over the specified time period, despite changes in the vacuum of the canister over time and/or environmental temperature.
The integrated air sampling kits available via Markes are suitable for the following time periods for the following canister sizes:
1 L: 1 hour
3 L: 4 hours
6 L: 8 hours
15 L: 20 hours
C-ASK1168SL - C-ASK1168SS