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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UKAS 4264 Co Durham, GB
ISO 14644-3 DIN EN 12469 BS 7989:2001 BS EN ISO 14644-1:2015 DIN EN 14175-3 + 1 more
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ACCREDIA 00584 Gorle, IT
ISO 6888-1 DIN EN ISO 10304-1 ISO 14698-1 DIN EN ISO 15213-2 ISO 11731 + 3 more
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ACCREDIA 00473 Stazzano, IT
ISO 17604 DIN EN 12457-2 DIN EN ISO 6888-1 ISO 19250 EPA 3630 + 3 more
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DAkkS D-PL-17142-01-01 Stahnsdorf, DE
DIN ISO 11466 UNE-EN 12880 ÖNORM EN 12457-4 ISO 10523 DIN EN 27888 + 3 more
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DAkkS D-K-20800-01-01 Bonn, DE
− Scheinwerfer-Einstell-Prüfsystem − Abgasmessgeräte für Fremdzündungsmotor − Abgasmessgeräte für Kompressionszündun Railway brake — magnetic track brakes (U nur Vor-Ort-Kalibrierungen + 3 more
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COFRAC 1-0576 Sedan, FR
DIN EN ISO 717-2 DIN EN ISO 10140-3 DIN EN 1081 DIN EN ISO 105-B02 DIN EN ISO 9239-1 + 3 more
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TC Laser

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DAkkS D-PL-22493-01-00 Eppertshausen, DE
DIN EN 50689 VDE 0837-689 DIN 56912 DIN EN 60825-1 VDE 0837-1 + 3 more
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ENAC LE1474 San Sebastián de los Reyes, ES
UNE 73109 IEC 60780 (1998) UNE 73109 (2001) ISO 28218 ISO 27048
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ACCREDIA 00897 Lenta, IT
DIN EN 12457-2 DIN EN 16502 EPA 6020 DIN EN 1026 DIN EN 14902 + 3 more
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ACCREDIA 00533 Altamura, IT
DIN EN 12457-2 DIN EN ISO 20236 DIN EN ISO 10304-1 UNI 10802 DIN EN ISO 6888-2 + 3 more
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ENAC LE936 Alcobendas, ES
UNE-EN 12469 UNE-EN ISO 14644-1 (sin realizar toma se
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ACCREDIA 00158 Cabiate, IT
DIN EN 13037 ISO 1841-2 DIN EN ISO 6888-1 EPA 3015 DIN EN 13038 + 3 more
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ACCREDIA 00217 Pisticci, IT
EPA 8260 EPA 6020 EPA 3510 UNI 10506 EPA 3015 + 3 more
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ENAC LE2183 Sant Cugat del Vallès, ES
UNE-EN ISO 14644-3 UNE-EN ISO 14644-1 (sin realizar toma se ISO 14644-3 UNE-EN 12469
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TECYGES

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ENAC LC10.232 Zaragoza, ES
CEM Procedimiento
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DAkkS D-K-15024-01-01 Heusweiler, DE
- Gleichspannung / Messgeräte 0,1 mV > 220 mV > 2,2 V + 3 more
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ACCREDIA 00061 Ravenna, IT
ISO 15705 EPA 8260 DIN EN ISO 10304-4 BS EN ISO 17294-2 DIN EN ISO 15587-2 + 3 more
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ENAC LE1255 Almería, ES
UNE-EN ISO 7393-2 UNE-EN 26777 UNE-EN 10523 UNE-EN ISO 7887 UNE-EN 1484 + 3 more
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TERANA LOIRE

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COFRAC 1-6124 Montbrison Cedex, FR
DIN EN ISO 7932 DIN EN ISO 6579-1 NF U47-108 DIN EN ISO 15213-2 NF U47-100 + 3 more
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COFRAC 1-6120 Lempdes, FR
NF T 90-412 NF U47-101 DIN EN ISO 7899-1 DIN ISO 16649-2 DIN EN ISO 6888-2 + 3 more
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DAkkS D-K-15097-01-01 Pinneberg, DE
Elektrische Messgrößen Gleichstrom- und Niederfrequenzmessgröße Railway brake — magnetic track brakes (U − Gleichspannung − Gleichstromstärke + 3 more
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ACCREDIA 01866 Prato, IT
ISO 17704 BS EN ISO 14362-1 ISO 1841-2 BS EN ISO 14362-3 ISO 16181-1 + 3 more
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ACCREDIA 00594 Atessa, IT
ISO 6888-1 DIN EN ISO 10304-1 ISO 14698-1 ISO 14189 ISO 11731 + 3 more
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ACCREDIA 00524 Cernusco sul Naviglio, IT
ISO 6888-1 ISO 18787 DIN EN ISO 7393-2 AOAC 2012.01 2016 DIN EN 61442 + 3 more
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ACCREDIA 00620 Siracusa, IT
ISO 13720 ISO 6888-1 ISO 17604 ISO 14698-1 ISO 14189 + 3 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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