|A new technique developed for the collection of
airborne particles using a small reverse-flow cyclone.
Further advantages include more flexible and less laborious sampling well suited to new technologies including immunological methods for quantitative assessment and highly specific recognition.
The sampler illustrated utilises a standard 9 x 3 mm vertical orifice and is recommended for use in slow moving air or directed into light winds of constant direction. The Cyclone sampler will give valuable information on many indoor situations, for which its mains/battery operation and almost silent turbine fan make it very acceptable.
|Long-term tests have shown that the size
spectrum of particles captured indicated that the Cyclone
was more efficient at sampling paucimicronic particles
(19.9% of total particles below 2.5 Ám compared with
9.5% using a standard impaction system).
Spores are collected and retained in a viable condition, the eppendorf vial can be capped and refrigerated for subsequent evaluation.
Construction and Equipment Details
A self-contained instrument with built-in mains charger and mains voltage selector available for 120v or 240v ac. The power unit is fitted with Nickel Cadmium batteries maintaining an air throughput up to 20 litres per minute. The pre-set timer on the front panel will allow 99 minutes of running time and an audible alarm will sound when the sampling time is complete. A neon indicator shows when the system is functioning. The cyclone unit is a precision item fully machined from hard alloy material, natural anodised to prevent corrosion.
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© Burkard Manufacturing Co. Ltd., 22 March, 2004