Improving airborne pathogen measurement

Published: 2-Apr-2015

Frequently contamination monitoring relies on the swabbing of surfaces but Jim Mills, Managing Director, Air Monitors, describes how cyclone technology developed in France is being used for improved bioaerosol sampling of a variety of environments

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Many traditional methods for detecting airborne sources of contamination rely on the deposition of the contamination onto a surface. For example, surface swabs might be taken, or bioaerosol sampling might be undertaken with a sampler that relies on the impact of biological particles onto a solid growth medium. These methods are unable to deliver an accurate measurement of airborne load. In contrast, the Coriolis µ employs a wet-walled cyclone technology that improves bioaerosol sampling for bacteria, pollen, endotoxins, viruses and fungal spores.

By passing sample air through liquid in a cyclone, the Coriolis µ is able to collect airborne particles in a liquid at a high flow rate (300 l/m) with validated efficiency. The liquid containing the particles can then be analysed using one of a number of the latest rapid microbiological analysis methods.

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