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
1,644 Accredited labs
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VALIDA

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ACCREDIA 00563 Marcon, IT
ISO 6888-1 DIN EN ISO 15213-2 ISO 14189 ISO 11731 ISO 4832 + 3 more
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VEGEZIO

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ACCREDIA 00777 Cesena, IT
AOAC 2012.01 2016 UNI 10590 DIN EN ISO 6888-2 ISO 11443 DIN EN ISO 10272-1 + 3 more
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Veolia Italia

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ACCREDIA 00157 Monselice, IT
DIN EN ISO 6888-1 ISO 15923-1 DIN EN 15634-1 DIN EN ISO 6888-2 EPA 1613 + 3 more
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VeronaLab srl

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ACCREDIA 00792 Villafranca Fraz. Dossobuono, IT
ISO 11423-1 DIN EN 12457-2 DIN EN 17322 EPA 7199 DIN 51750-3 + 3 more
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ACCREDIA 00082 Entratico, IT
ISO 15705 ISO 11731 DIN EN ISO 9377-2 BS EN 15662 AOAC 2012.01 2016 + 3 more
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WTLAB

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ACCREDIA 01077 Tribano, IT
IEC 62109-1 IEC 61400-21-1 IEC 62109-2 DIN EN 60598-2-4 DIN EN 60068-2-30 + 3 more
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ACCREDIA 00254 Zola Predosa, IT
ISO 11737-2 BS EN ISO 11737-1:2018 ISO 11737-3 ISO 10993-12 BS EN ISO 14644-1:2015 + 2 more
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ACCREDIA 00165 Roncoferraro, IT
ISO 13720 DIN 3388-4 EPA 6020 EPA 3535 DIN EN ISO 6888-1 + 3 more
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pH SrL

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ACCREDIA 00069 Tavarnelle Val di Pesa, IT
NEN-EN 16618 ISO 6888-2 ISO 18787 DIN EN 15634-1 ISO 11731 + 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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