Transcription of Local Exhaust Ventilation Testing Protocols
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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 .. 1 Certification of Performance .. 1 Frequency of Performance Testing .. 2 DOWNDRAFT TABLES FOR SMALL ANIMAL SURGERY .. 2 Introduction .. 2 Performance Testing .. 2 Air Velocity Measurement.
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
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