For personal sampling, place the holder within the worker’s breathing zone (cassette opening facing down) and connect through flexible vacuum tubing to a flow-controlled battery-operated pump attached to the worker’s belt. Sampling is typically carried out long enough to represent a full work shift (minimum of 1/2 the full shift). Flow rate is usually 1 to 4 liters per minute, adjusted according to expected fiber and particle concentrations.
For area sampling, mount the holder vertically on a stand and direct toward a representative air space. Connect the holder to an appropriate vacuum pump through flexible vacuum tubing, and adjust the flow rate. If you use a threaded hose adapter (XX6200004)
, you can regulate the flow by inserting the appropriate flow-limiting orifice. We supply orifices in a matched set to monitor a range of flow rates.