ISO 7574-4:1985 Preview
Acoustics -- Statistical methods for determining and verifying stated noise emission values of machinery and equipment -- Part 4: Methods for stated values for batches of machines
This standard was last reviewed and confirmed* in 2012.
*Therefore this version remains current
Provides guidelines for determining the labelled value by the labeller and specifies statistical sampling procedures for checking compliance of noise emitted of a lot of machines with its labelled value. Does not deal with the consequences that ensue if the specified value is not confirmed as checked for a lot of machines.