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
1,868 Accredited labs
20 Countries

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DAkkS D-ML-13452-01-01 Ingelheim, DE
2C-B 2C-I 3-Hydroxy-Bromazepam 5-Hydroxyindolessigsäure 6-Acetylcodein + 3 more
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DAkkS D-ML-13452-05-00 Jena, DE
Zelldifferenzierung Erythrozyten Großes Blutbild Hämoglobin Kleines Blutbild + 3 more
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DAkkS D-ML-13452-07-00 Mainz, DE
Hämoglobin (immunologisch) CA 125 CA 15-3 CA 19-9 CA 72-4 + 3 more
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DAkkS D-ML-13452-06-00 Moers, DE
Hämoglobin Natriumchlorid Kalium Natrium Eiweißelektrophorese: Albumin, Alpha-1-G + 3 more
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DAkkS D-ML-13322-01-00 Karlsruhe, DE
10-OH-Carbazepin 11-Deoxycortisol 17-OH-Progesteron 21-Deoxycortisol 25-OH Vitamin D2 + 3 more
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DAkkS D-ML-19774-01-01 Gießen, DE
Thrombozytenfunktion 5-Hydroxyindolessigsäure Adrenalin Amiodaron, Desmethylamiodaron Carbohydrate-deficient + 3 more
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DAkkS D-ML-13031-01-01 St. Ingbert, DE
Lamotrigin Metanephrine, Normetanephrine Erythrozyten Aripiprazol Lymphozyten + 3 more
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UKAS 0726 Garretts Green, GB
(HSG 248) – 2021 ) (PCM) based on HSG 248) (PCM) based on HSG 248 staining based on HSG 248 (HSG 264, 2012)
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Bizerba SE &

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DAkkS D-PL-15018-01-00 Balingen, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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DAkkS D-PL-22936-01-01 Löffingen, DE
DIN EN 61000-3 IEC 61000-3-2: 2014 IEC 61000-3-3 IEC 61000-3-11: 2017 IEC 61000-3-12: 2011 + 3 more
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Blower Door

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DAkkS D-K-19788-01-00 Springe-Eldagsen, DE
Positiver und negativer verwendete Abkürzungen: DKD-R
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UKAS 1155 Halesowen, GB
staining based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248 (HSG 264:2012)
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DAkkS D-PL-18812-01-02 Bremen, DE
DIN EN ISO 2418 DIN EN 61340-4-4 DIN CEN ISO/TS 16179 DIN EN ISO 14362-1 DIN EN ISO 14362-3 + 3 more
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UKAS 7864 Bridgend, GB
(HSG 248) – 2021 P10.2 based on HSG 248 (PCM) based on HSG 248
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UKAS 24592 Barry, GB
TORQUE
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UKAS 9230 Warrington, GB
ÖNORM EN ISO 3452-1 BS 3923-1:1986(Withdrawn) ASTM E165-23 BS 4124:1991(Withdrawn) DIN EN 10228-3 + 3 more
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UKAS 0295 Norwich, GB
(HSG 264, 2012)
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UKAS 0103 Meltham, GB
Inch Millimetre
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UKAS 10636 Earby, GB
ISO 20768:2018)
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UKAS 2245 Uxbridge, GB
Based on ISO 10312:2019 and ISO SOP 16 by XRD (ISO BS EN
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UKAS 2612 Wraxall, GB
BS EN ISO 16283-1:2014+A1:2017BS EN ISO BS EN ISO 16283-2:2020 BS EN ISO 140-4:1998 BS EN ISO 717-2:2020 ISO 1407 + 2 more
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DAkkS D-PL-12084-01-00 Hamburg, DE
IEC 60945 IEC 61162-1 IEC 61162-2 IEC 61162-450 IEC 61162-460 + 3 more
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DAkkS D-K-15063-01-00 Berlin, DE
Radioaktivität 50 Bq/m³ Radon-222- 100 Bq/m³ tration in Luft 200 Bq/m³ + 3 more
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DAkkS D-PL-11075-01-01 Berlin, DE
DIN EN ISO 2808 DIN EN ISO 3219-2 DIN EN ISO 3838 DIN EN 933-1 DIN EN 933-4 + 3 more
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DAkkS D-K-11075-08-00 Berlin, DE
Conformity assessment — requirements for Railway composite brake blocks — require 0,2 kN 0,4 kN 100 kN + 3 more
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Industries

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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