Acoustics. Reference zero for the calibration of audiometric equipment - Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz Ingestion-build-67170 Detail specifications

Detail specifications

The inactivation of a pure culture of microorganisms by physical and/or chemical agents used to sterilize medical devices often approximates an exponential relationship

working load limits and mechanical properties are given in annex A

BS EN 60974-12:2005 replaces BS EN 60974-12:1996

Acoustics. Reference zero for the calibration of audiometric equipment - Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz Ingestion-build-67170 Detail specifications1 Scope This part of ISO 389 specifies reference equivalent threshold sound pressure levels (RETSPLs) of pure tones in the frequency range from 8 kHz to 16 kHz applicable to the calibration of air conduction audiometers for specific earphones. NOTE Some notes and references on the derivation and the test conditions used to determine the reference levels are given in Annex A and the Bibliography.