Acoustics. Reference zero for the calibration of audiometric equipment - Preferred test conditions for the determination of reference hearing threshold levels Ingestion-build-48068 chemical process

chemical process

vacuum lifters

BS ISO 13849-2:2012 specifies the procedures and conditions to be followed for the validation of specified safety functions through analysis and testing in accordance with ISO 13849-1

high viscosity

Titanium alloy TI-P63001 (Ti-4Al-4Mo-2Sn)

Acoustics. Reference zero for the calibration of audiometric equipment - Preferred test conditions for the determination of reference hearing threshold levels Ingestion-build-48068 chemical process1 Scope This part of ISO 389 specifies test conditions for determining the hearing thresholds of subjects for the purpose of establishing standardized values for reference hearing threshold levels.