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.
excessive traffic and overhead supply diffusers must be avoided. Air velocity measurement is to be done using a calibrated thermoanemometer. For measurement purposes, the work surface of the downdraft table is to be divided into an imaginary grid of four-inch squares. The air velocity
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