TDSHS Asbestos Air Monitoring Technician Practice Exam

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What is the acceptable flow rate for low flow air sampling pumps?

0.1 to 0.5 Lpm

0.5 to 2.5 Lpm

The acceptable flow rate for low flow air sampling pumps is typically in the range of 0.5 to 2.5 liters per minute (Lpm). This flow rate is ideal for collecting airborne asbestos fibers because it is low enough to prevent disturbance of the fibers, allowing for a more accurate assessment of ambient air quality.

Low flow rates help to minimize the potential for turbulence, which could lead to erroneous sampling results. The chosen flow range ensures that the pump can effectively collect particulate matter without overshadowing finer, critical aspects of the air sample, particularly in environments where the concentration of fibers is low. By operating within this specified range, air sampling can effectively capture representative samples needed for analysis, ultimately ensuring compliance with health and safety regulations associated with asbestos exposure.

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2.5 to 5.0 Lpm

5.0 to 10.0 Lpm

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