Scope
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
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DIN EN ISO 4871
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BS EN ISO 4871
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NF EN ISO 4871
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UNI EN ISO 4871
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UNE EN ISO 4871
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NEN EN ISO 4871
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DIN EN ISO 11201
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BS EN ISO 11201
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NF EN ISO 11201
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UNI EN ISO 11201
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UNE EN ISO 11201
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NEN EN ISO 11201
1,670
Accredited labs
18
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Showing 601–625 of 1,670 labs
DIN EN ISO 10140-1
DIN EN ISO 717-1
DIN EN ISO 10140-2
DIN EN ISO 10140-4
DIN EN ISO 10140-5
HaBu Hauck Prüftechnik
Active
Härte *) 20 HRA
Härtevergleichsplatten 20 HRB
nach Rockwell Verfahren 20 HRC
40 HRD
60 HRF
+ 3 more
Hampshire Scientific Service
Active
(HSG 248) - 2021
ASB/SOP/OM8 based on HSG 248
ASB/SOP/OM6 based on HSG 248
DIN EN 12697-11
on BS 4401:Part 3:1970(1986)
+ 3 more
Hann Tucker Associates
Active
ISO 7171
ISO 1407
BS EN ISO 140-4:1998
BS EN ISO 717-2:2020
Hartford Steam Boiler UK
Active
BS 2790 - Specification for the design a
BS 1113 - Specification for the design a
BS EN 13480 Parts 1 to 8 - Metallic
EN 13445 – Parts 1 to 10 Unfired pressur
BS EN ISO 15614 and ASME IX
+ 3 more
automatische Zelldifferenzierung
Erythrozyten
Leukozyten
Retikulozyten
Thrombozyten
+ 3 more
Healthy Abode
Active
ISO 7171
BS EN ISO 140-4:1998
BS EN ISO 16283-1:2014+A1:2017BS EN ISO
BS EN ISO 16283-2:2020
HTM 08-01 - 2013
+ 2 more
(HSG 264, 2012)
and Appx. 3 of HSG 227 (2004))
Executive guides HSG 264 (2012)
Kraft (WPM)
Werkstoffprüfmaschinen
Acoustics — tonality assessment (DIN 456
messeinrichtungen von
Härte (WPM) 30 HBW
+ 3 more
Absolutdruck p
abs
> 41 bar
Negativer und
positiver Überdruck
+ 3 more
Heywood Williams Components
Active
DIN EN 1026
DIN EN 12046-2
BS 6375-1:2015 + A1:2016 and the
DIN EN 1027
DIN EN 1629
+ 3 more
Hohenstein Laboratories
Active
DIN 53160
DIN 54034
DIN 54056
DIN EN 20105-A02
DIN EN 20105-N01
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Taupunkttemperatur
thermometer, -80 °C bis
Railway braking — urban guided transport
> -35 °C bis
Temperatur- −35 °C bis
+ 3 more
–1 bar
Positiver und negativer
Positiver Überdruck p e
> 0,0 bar
Absolutdruck p abs 0,25 bar
+ 3 more
Hottinger Brüel & Kjaer
Active
Übertragungsmaß von
Messmikrofonen oder
Freifeld-Leerlauf- 20 Hz
Freifeld -Übertragungsmaß
Vorverstärker, nach IEC
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Hydrodata
Active
DIN EN ISO 5667-1 (A 4)
DIN 38402-A 12
DIN 38402-A 13
DIN 38402-A 15
DIN EN ISO 5667-3 (A 21)
+ 3 more
Hydrotechnik
Active
Negativer und
Positiver Überdruck p e
> 0,015 bar
Überdruck p
(ein- oder mehrgängige
+ 3 more
HygCen Germany
Active
DIN EN ISO 10993-1
DIN EN ISO 10993-5
DIN EN ISO 17405
ISO 10993-23
DIN EN ISO 10993-18
+ 3 more
Hygiene Nord
Active
DIN EN ISO 10993-5
DIN EN ISO 10993-1
DIN EN ISO 11737-2
DIN EN 1040
DIN EN IEC 60601-2-75
+ 3 more
Innen- und Tiefenmaße
Konventioneller
Wägewert/
Massenormale
Festkörpervolumen
+ 3 more
I2 Analytical
Active
staining based on HSG 248.
(HSG 248) – 2021
(PCM) based on HSG 248
A007B based on BS EN15051-2:2013 +1:2016
DIN EN 12457-3
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