IS 9167 : 1979 Specification for ear protectors

1 Scope

1.1 This standard covers the performance requirements fordevices for personal hearing protection.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 589 :1961 Basicclimatic and mechanical durability tests forcomponents for electronic and electrical equipment

IS 1885 : Part III Electrotechnical vocabulary:Part III Acoustics

IS 4905 :1968 Methods for randomsampling

IS 6229 :1971 Method ofmeasurement of the real-ear attenuation ofear protectors at threshold

IS 7194 :1973 Assessment ofnoise exposure during work for hearingconservation purposes