Andersen Sampler AN200

Andersen sampler AN-200 consists of eight stage impactors of aluminum alloy plates which have 800, 400 and 200 jet nozzles. The diameters of nozzles become smaller as they are placed lower.

When air is sucked from the air inlet of the apparatus at a fixed flow rate of 28.3 L/min, the speeds of air jet streams become higher as the plates are placed lower.

According to aerodynamic theory, aerosol particles are segregated into aerodynamic diameters as shown in this figure.

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