Scope
DIN 45680
Low-Frequency Noise Measurement and Assessment
DIN 45680 specifies procedures for measuring and evaluating low-frequency noise (typically 8 Hz to 160 Hz) immissions in buildings and indoor environments. Low-frequency noise from sources such as wind turbines, industrial equipment, traffic, and HVAC systems can cause annoyance and health effects even at sound pressure levels below conventional noise limits. The standard defines frequency-weighted assessment methods, measurement locations, and evaluation criteria specific to low-frequency phenomena. Accreditation for this test method enables laboratories to conduct specialized assessments required for wind energy projects, industrial operations, and building acoustics investigations in sensitive environments.
What it measures
- Sound pressure levels in the low-frequency range (8–160 Hz)
- Low-frequency weighted acceleration and vibration metrics
- Frequency content and tonal characteristics of low-frequency sources
- Indoor sound field distribution and room resonance effects
- Infrasound component presence and magnitude
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DIN EN ISO 389-7
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BS EN ISO 389-7
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NF EN ISO 389-7
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UNI EN ISO 389-7
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UNE EN ISO 389-7
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NEN EN ISO 389-7
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DIN EN ISO 226
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BS EN ISO 226
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NF EN ISO 226
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UNI EN ISO 226
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UNE EN ISO 226
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NEN EN ISO 226
1,670
Accredited labs
18
Countries
Showing 1,051–1,075 of 1,670 labs
Microtech Services (Wessex)
Active
ISO 7251
# = 100 A
ISO 6888-3
1) A:2b based on ISO 4833-2:2013 Amd 1:2
2) A:6c based on ISO 21528-1:2017 by mos
+ 1 more
Mimete Srl Unipersonale
Active
ASTM B212-21
ASTM E1019-24
ASTM B527-24
BS EN ISO 3923-1
ASTM B417-22
+ 3 more
Minebea Intec Bovenden
Active
Konventioneller
Wägewert/
Massenormale
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
+ 3 more
Bacillus cereus Toxin
Clostridium perfringens
Salmonella spp.
Shigella spp.
Staphylococcus aureus Toxin
+ 3 more
ETSI EN 319 412
ETSI EN 319 401
ETSI EN 319 411-2
ETSI EN 319 411-1
Mitutoyo Deutschland
Active
Parallelendmaße 0,5 mm
DIN EN ISO 3650:1999
Parallelendmaße
> 10 mm
Parallelendmaße > 100 mm
+ 3 more
Mobiler Kalibrierdienst Fini
Active
Gleichspannung 3 mV
Messgeräte 10 mV
> 100 mV
> 220 mV
> 11 V
+ 3 more
IEC 61000-4-7
IEC 61000-4-15
IEC 61000-4-30
IEC 61400-21
IEC 61400-21-1
+ 3 more
Temperatur 50 °C
Railway brake handbooks (UIC 547)
1) In den CMC sind die erweiterten Messu
IEC 61000-4-2: 2008
VDE 0847-4-2
IEC 61000-4-3: 2006
VDE 0847-4-3
IEC 61000-4-4: 2012
+ 3 more
Mühlenkreiskliniken AöR Institut für Laboratoriumsmedizin, Transfusionsmedizin und Mikrobiologie
Suspended
Differentialblutbild
Kleines Blutbild (maschinell)
Thrombozyten
Unreife Thrombozyten (IPF)
Urinsediment (maschinell)
+ 3 more
DIN EN ISO 717-1
DIN EN ISO 717-2
DIN EN ISO 10140-2
DIN EN ISO 10140-4
DIN EN ISO 10140-5
+ 3 more
Pistonfonen und von
Schallkalibratoren
Pistonphonen und von (bezogen auf 20 µPa
31,5 Hz bis 16 kHz
(bezogen auf 1 V/Pa)
+ 3 more
DIN 4150-1
DIN 4150-2
DIN 4150-3
DIN ISO 8297
DIN EN ISO 12354-4
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München Klinik gGmbH Medizet - Institut für Laboratoriumsmedizin und medizinische Mikrobiologie
Active
Hämoglobin A1c
Hämoglobin-Differenzierung
Erythrozyten
Basophile Granolozyten
Eosinophile Granulozyten
+ 3 more
NATEC Sensors
Active
Railway brakes — conditions for homologa
− Durchfluss von Flüssigkeiten
Gleichspannung U
(Simulation des Signals
generators)
+ 3 more
NEOTES Ambiente e Qualità
Active
DIN EN 1186-3
DIN EN 17322
EPA 3535
BS EN 15662
EPA 3015
+ 3 more
2 · 10–6 mol/mol C 100 · 10–6 mol/mo
0,1 · 10–2 mol/mol < C 2,5 · 10–2 mol/
1 · 10–6 mol/mol C 100 · 10–6 mol/mo
5 · 10–6 mol/mol C 20 · 10–6 mol/mol
0,15 · 10–2 mol/mol C 20 · 10–2 mol/
+ 3 more
NMi TESTLAB
Active
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
NORMEC ABIOLAB
Active
NF T 90-412
DIN EN ISO 7899-1
DIN EN ISO 10304-1
DIN EN ISO 6888-2
NF V08-054
+ 3 more
NORMEC QS
Active
NEN-EN 13361
ISO 13362
NEN-EN 13491
DIN EN 13493
NEN-EN 13492
+ 3 more
NSF Wales Limited
Active
BS EN ISO 7686:2005
DIN EN 997
DIN EN 13079
DIN ISO 10381-7
DIN EN 14622
+ 3 more
Narda Safety Test Solutions
Active
Elektrische Feldstärke /
2 V/m
2,5 V/m
1 V/m
Magnetische Feldstärke /
+ 3 more
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