12 Access Sensor Technologies UPAS User Guide
Removing / Installing the Sampling
Filters and Chain of Custody
The following instructions describe removing and installing aerosol sampling
filters (user supplied) in a UPAS Filter Cartridge. Handling and processing aerosol
sampling filters should be done per sampling protocol defined by the
organizational standard being followed. “Recommended UPAS Filter Membranes”
on page 6 lists all recommended sampling filters.
The filter membranes are fragile; handle with care. Do not handle the filter
membranes with your bare hands. Always use clean tweezers.
For most air sampling applications, it is vital to maintain the integrity of collected
samples and track the history of samples. Used filter cartridges need to be
removed from each UPAS Sampler and returned to their original packages.
Do not open filter cartridges unless the sampling protocol instructs you to do
so.
1 Wash and dry your hands thoroughly.
2 Unscrew the black Cyclone Inlet Cap from the front of the UPAS device.
3 Remove the filter cartridge from the UPAS. Hold the filter cartridge only by
the edges.
4 Return the filter cartridge to its original package.
5 Seal the package.
6 Return the package to the agency / organization sponsoring the test.
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