ISO 16232

Technical cleanliness of fluid system components

ISO 16232 specifies methods for assessing particle contamination in hydraulic, fuel, and coolant system components used in road vehicles. This standard defines procedures for extracting, counting, and classifying particles from functional parts like injectors, pumps, valves, and filters. The test is critical for automotive suppliers and OEMs to ensure component reliability and prevent system failures caused by particulate matter. ISO 17025 accreditation for this test guarantees metrological traceability and consistent contamination classification across European supply chains.

What it measures

  • Particle size distribution (ISO 4406 code classification)
  • Total particle count per component
  • Contamination class of hydraulic fluid
  • Fuel system particulate contamination
  • Coolant circuit cleanliness level
🇩🇪 DIN EN ISO 4406 🇬🇧 BS EN ISO 4406 🇫🇷 NF EN ISO 4406 🇮🇹 UNI EN ISO 4406 🇪🇸 UNE EN ISO 4406 🇳🇱 NEN EN ISO 4406
1,865 Accredited labs
17 Countries

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RvA L355 Delft, NL
IEC 15408-1 IEC 18045
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COFRAC 1-6449 Saint-Etienne-Du-Rouvray, FR
DIN ISO 17289 DIN EN ISO 10523 NF X 31-615 (Uniquement DIN EN ISO 7393-2 DIN EN 27888 + 1 more
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COFRAC 1-6446 Evry-Courcouronnes, FR
NF X 43-264 NF X 43-014 NF X 43-267 DIN EN ISO 15587-2 NF T90-111 + 3 more
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COFRAC 1-7056 Gennevilliers, FR
NF X 43-269 - Annexe K NF X43-050 (parties utiles de ISO 22262-1 NF X 43-050 NF ISO 22262-1 (parties utiles
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COFRAC 1-6452 Brive-La-Gaillarde, FR
DIN ISO 17289 DIN EN ISO 10523 NF X 31-615 (Uniquement DIN EN ISO 7393-2 DIN EN 27888 + 1 more
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COFRAC 1-6454 Toulouse, FR
NF X 43-269 NF X 43-269 - Annexe K NF X43-050 (parties utiles de ISO 22262-1 NF X 43-050 + 1 more
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SGS Germany

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DAkkS D-PL-11020-03-01 Puchheim, 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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SGS Germany

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DAkkS D-PL-11020-04-01 Hamburg, DE
DIN EN ISO 12966-2 DIN EN 15621 DIN EN 15111 DIN EN 15763 DIN EN 15765 + 3 more
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DAkkS D-PL-11020-01-00 Speyer, DE
DIN 51757 ASTM D 4052 DIN EN ISO 12185 DIN EN ISO 3405 DIN EN 13016-1 + 3 more
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DAkkS D-PL-14115-02-09 Taunusstein, DE
DIN EN ISO 2639 DIN EN ISO 6507-1 DIN EN ISO 6508-1 DIN EN 10328 DIN 50190-3 + 3 more
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ACCREDIA 00071 Assemini, IT
EPA 8260 EPA 3510 EPA 5021 EPA 5030 EPA 8270 + 3 more
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SGS Nederland

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RvA L106 Oosterhout Nb, NL
ISO 6222 ISO 9308-1 DIN EN ISO 11290-1 DIN EN ISO 11290-2 ISO 4832 + 3 more
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ENAC LE011 Madrid, ES
DIN EN 61010-2-010: 2015 DIN EN 60335-2-9 IEC 61000-4-8: 2009 IEC 61010-2-010: 2014 DIN EN 61010-2-101 + 3 more
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UKAS 0131 South Wirral, GB
Joint IP/ASTM methods marked IP 195*ASTM D1078 ASTM D847 by titration ASTM D848 ASTM D 1353 + 3 more
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UKAS 0244 Broadlands, GB
(HSG 248) – 2021 ASB/SOP/OM8 based on HSG 248 (PCM) based on HSG 248
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UKAS 4412 Colbourne Crescent, GB
CHEM014 based on BS 4401 based on BS 4401 Part 4:1970 CHEM018 based on BS 4401 CHEM023 based on BS 4401- ISO 6579-1 + 3 more
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UKAS 1549 Bar Hill, GB
Method CBG-M-SOP-027 based on BS EN ISO AM01 based on BS EN ISO 4833-1: 2) Method CBG-M-SOP-038 based on BS ISO ISO 10272-2 Method CBG-M-SOP-007 based on BS EN ISO + 3 more
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UKAS 0820 South Wirral, GB
MPV Thrombozytenvolume Gas meters Power meter method LENGTH Waterdraw Method + 3 more
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UKAS 0032 Oldbury, GB
BS EN 286 - Simple unfired pressure BS EN 13445 Unfired pressure BS EN13480 Metallic industrial BS EN 12953 Shell boilers BS EN BS EN 12952 Water-tube + 3 more
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SIALAB

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ACCREDIA 01419 Avola, IT
ISO 11731 DIN 18857-2 DIN EN 12457-2 ISO 18787 ISO 15680 + 3 more
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DAkkS D-K-20004-01-00 Haiger-Dillbrecht, DE
Härte (WPM) 80 HBW und Knoop-Verfahren 150 HV (Härteskalen HV5 bis HV100) 150 HV (Härteskalen HV 0,1 bis HV 3) + 3 more
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SIAS

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ACCREDIA 01139 Cellatica, IT
NF EN ISO 15587-2 et NF EN ISO 11885 DIN EN ISO 10304-1 DIN EN ISO 10523 DIN EN 27888 DIN EN ISO 15587-1 + 3 more
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ACCREDIA 00528 Milano, IT
ISO 8672 EPA 3630 UNI 10802 EPA 5035 EPA 3051 + 3 more
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COFRAC 1-0161 Cergy, FR
DIN EN ISO 21528-1 DIN 53483-2 DIN EN ISO 21528-2 DIN ISO 11665-4 DIN EN ISO 16649-3 + 3 more
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COFRAC 1-6746 Saint-Herblain, FR
ISO 18787 AM09 based on BS ISO 21527-1: DIN EN ISO 11290-1 NF V04-408 0.95) based on BS ISO 21527-2:2008 + 2 more
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Industries

Automotive component manufacturing Hydraulic systems Fuel injection systems Vehicle manufacturing Industrial fluid power systems

Related Standards

  • ISO 4406 Hydraulic fluid power fluids — Fluids for general applications — Coding of the degree of cleanliness
  • DIN EN ISO 16232 Road vehicles — Cleanliness of components for fluid circuits
  • VDA Band 19.1 Technical cleanliness — Particle contamination of functionally relevant parts

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