Intercomparison tests on hearing protectors is carried out at a number of European test institutes. Real ear attenuation at threshold is measured in accordance with EN 24869-1, and for muff-type protectors the insertion loss of each individual cup is determined in accordance with EN 352-1, paragraphs 7.11 - 184.108.40.206. The intercomparison is coordinated by Vertical Group 4, Hearing Protectors, under the European certification administration of personal protective equipment.
|Effective start/end date||01/01/1996 → 30/12/1997|
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