ISO 9612:2009

Occupational Noise Exposure Measurement

This standard specifies methods for measuring and assessing noise exposure of workers in occupational environments to determine compliance with exposure limits and identify hearing protection needs. The measurement protocols account for temporal variations in noise and worker movement to characterize daily noise exposure levels. Results are critical for occupational health and safety compliance, hearing loss prevention programs, and workplace risk assessment. Accredited laboratories ensure measurement uncertainty, calibration standards, and data interpretation meet regulatory requirements for legal and health-safety defensibility.

What it measures

  • Equivalent continuous A-weighted sound pressure level (Leq,8h)
  • Peak sound pressure levels and impulsive noise
  • Daily noise exposure level (LEX,8h)
  • Frequency-weighted noise exposure
🇩🇪 DIN EN ISO 4871 🇬🇧 BS EN ISO 4871 🇫🇷 NF EN ISO 4871 🇮🇹 UNI EN ISO 4871 🇪🇸 UNE EN ISO 4871 🇳🇱 NEN EN ISO 4871 🇩🇪 DIN EN ISO 11201 🇬🇧 BS EN ISO 11201 🇫🇷 NF EN ISO 11201 🇮🇹 UNI EN ISO 11201 🇪🇸 UNE EN ISO 11201 🇳🇱 NEN EN ISO 11201
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Labor Heidrich & Kollegen MVZ

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DAkkS D-ML-13201-03-01 Hamburg, DE
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DAkkS D-ML-19490-01-00 Aachen, DE
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DAkkS D-ML-18018-01-00 Kiel, DE
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DAkkS D-ML-13363-01-00 Ingolstadt, DE
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Labor von Froreich

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DAkkS D-ML-13298-01-01 Hamburg, DE
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Labor Hannover MVZ

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Labor Lübeck MVZ

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Labor Mainz MVZ

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Labor für Wasser und Umwelt

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DAkkS D-PL-14586-01-02 Bad Liebenwerda, DE
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Labor:Medizin Krefeld Medizinisches Versorgungszentrum

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DAkkS D-ML-19493-02-00 Krefeld, DE
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DAkkS D-ML-13273-01-00 Minden, DE
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Laborarztpraxis med. S. Wehrenfennig

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Laborarztpraxis Osnabrück e

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DAkkS D-ML-13243-01-01 Georgsmarienhütte, DE
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COFRAC 1-7427 Launaguet, FR
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COFRAC 1-1157 Bonneuil Sur Marne, FR
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Laboratoire Départemental Vétérinaire et d'Hydrologie de la Haute-Saône (LDVH 70)

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COFRAC 1-1810 Vesoul, FR
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Laboratoire Départemental d'Analyses

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COFRAC 1-0536 Arras Cedex, FR
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Laboratoire Départemental d'Analyses de La Réunion - Site CHATEL

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COFRAC 1-1756 Saint Denis, FR
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Laboratoire Départemental d'Analyses de Seine-et-Marne (LDA 77)

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COFRAC 1-1140 Dammarie Les Lys, FR
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Manufacturing and industrial production Construction and heavy equipment operation Mining and quarrying operations Transportation and logistics Entertainment and live event production

Related Standards

  • ISO 4871 Acoustics — Declaration and verification of noise emission values of machinery and equipment
  • ISO 11201 Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions
  • IEC 61672-1 Electroacoustics — Sound level meters — Part 1: Specifications

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