Acoustics. Hearing protectors - Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture Ingestion-build-65808 which is defined in the

which is defined in the other documents

Although the test method is capable of indicating those articles that are embrittled to the extent defined it does not guarantee complete freedom from embrittlement

These rules are applied by all railway companies and railway industry in the countries of the European Union (EU)

- CE marking

BS ISO 11001-2

Acoustics. Hearing protectors - Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture Ingestion-build-65808 which is defined in the1 Scope This part of ISO 4869 specifies a method for measuring the insertion loss of ear muff type hearing protectors using an acoustic test fixture. The method is applicable to the investigation of production spreads of performance as part of type approval or certification procedures, and to the investigation of the change of performance with age. It is intended to ensure that ear muffhearing protector samples submitted for subjective testing of