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Local Exhaust Ventilation Testing Protocols

National Institutes of Health Office of Research Services Division of Occupational Health and Safety Local Exhaust Ventilation Testing Protocols Technical Assistance Branch Reviewed June 2011 i National Institutes of Health Office of Research Services Division of Occupational Health and Safety Local Exhaust Ventilation Testing Protocols CONTENTS DOWNDRAFT SINKS FOR SMALL ANIMAL SURGERY .. 1 Introduction .. 1 Performance Testing .. 1 Air Velocity measurement .. 1 Smoke Test .. 1 Recording Results.

The measurement of air velocities is to be done using a calibrated thermoanemometer. For measurement purposes, the work surface of the downdraft sink is to be divided into an imaginary grid of four-inch squares. The air velocity measurements shall be taken at multiple points over the

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ors.od.nih.gov

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ors.od.nih.gov

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nvlpubs.nist.gov

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