Teledyne API 651 Ultrafine Particle Monitor

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The Teledyne API 651 Ultrafine Particle Monitor is a simple and reliable solution for the real time monitoring of UFP concentrations in ambient air. The Teledyne API 651 Ultrafine Particle Monitor is an ideal solution for today's routine ambient air quality monitoring applications. Teledyne API 651 instruments use a condensation particle counting technique, using water as the condensing fluid followed by laser detection. UFPs down to 7nm in size are detected, with time resolution down to 1-second. Sample collection, preparation, and analysis occur continuously, with a routine maintenance interval of 30 days.

Ultrafine particle (those less than 100nm, or 0.1µm in size) are produced through combustion activities and are persistent in all ambient air. Concentrations of these tiny particle can be very high near emissions sources (for example, near busy roads), and both acute and chronic exposure are believed to lead to health problems. As part of the new US EPA near-road ambient monitoring network, ultrafine particles (UFPs) will be monitored to determine concentration levels and further study health effects related to exposure.