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 0665 Buxton, GB
(PCM) based on HSG 248 1) ISO 10312:2019 using TEM, ED 2) ISO 13794:2019 using TEM, ED 1) ISO 13794:2019 using TEM, ED OP280 based on ISO 13794:2019 + 1 more
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UKAS 4659 Newry, GB
(HSG 264, 2012) and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012)
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UKAS 9868 Daventry, GB
DIN EN 1026 DIN EN 12046-2 BS 6375-1:2015 + A1:2016 and the DIN EN 1027 DIN EN 1629 + 3 more
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UKAS 24561 Hertford, GB
(HSG 264, 2012)
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I2 Analytical

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UKAS 4041 Croxley Green, GB
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 + 3 more
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UKAS 1516 Leigh, GB
BS EN ISO 1833-1:2020 And the following parts of ISO 1833 ISO 1833-4:2017/EU Reg. method 2ISO 1833 ISO 1833-3: 2019 ISO 1833-6: 2019 + 3 more
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UKAS 0101 Bridge of Don, GB
ASTM D 5443 ASTM D2892 (modified) ASTM D2503 ASTM D4052 (modified) ASTM D2887 (modified) + 3 more
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UKAS 0123 Aberdeen, GB
DC Resistance DC VOLTAGE Temperatur-Simulation AC CURRENT Base metal thermocouples + 3 more
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UKAS 0102 Grays, GB
ASTM D3338 ASTM D 2624 ASTM D 5006 ASTM D 2386 ASTM D7153 + 3 more
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UKAS 1158 Chester, GB
UK 3725 based on ASTM D2163 and BS EN 15984:2011-07 IP 411, ISO 6251 ASTM D6667 mod ISO 8973 modified + 3 more
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UKAS 4065 Stoke on Trent, GB
#ISO 10307-1 F22 1 based on ISO 3496:1994(E) F05 4 based on BS 770:Part on BS 4401:Part 3:1970(1986) C001 based on BS 4401:Part + 3 more
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UKAS 8401 Drighlington, GB
Appendix 5 of HSG 227 (2004))
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UKAS 4688 East Kilbride, GB
DC Resistance AC VOLTAGE (continued) AC POWER AC CURRENT Generation (continued) + 3 more
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Intona

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UKAS 10273 Dundee, GB
and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012) (HSG 264, 2012)
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J B-Monitor

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UKAS 2075 Colwyn Bay, GB
(HSG 248) – 2021 No 1 based on HSG 248 – 2021 (PCM) based on HSG 248 – 2021 No 3 based on HSG 248 – 2021 (PCM) based on HSG 248 + 1 more
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UKAS 2154 Weston-super-Mare, GB
ISO 178 BS 5350:Part C13 BS 2782 Part 10 Method 1005 BS EN ISO 14125 MIL-STD 810G:2008 Method 501.5 + 3 more
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UKAS 0027 Colwick, GB
BS EN ISO 11623:2015 BS EN ISO 18119:2018+A1:2021 BS EN ISO 10460:2018 BS EN 20745:2020
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Javer Labs

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UKAS 31736 Nottingham, GB
MIL-STD-810G, Method 508:7 BS 2011:2.1 Ca:1977 (IEC 60068-2-10:2005+A1:2018, MIL-STD-810H, Method 508:8
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UKAS 4168 Smithfield, GB
DC CURRENT INSPECTION EQUIPMENT AC CURRENT 50 Hz RMS uncertainties may be increased.
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UKAS 4630 East Sussex, GB
LENGTH ended (excluding length bars) Chronic progressive external Dial gauges and dial test Caliper Gauges + 1 more
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Kiwa

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UKAS 8896 Rasssau, GB
DIN EN 13079 BS 1212-4:1991 Clause 4, 13, 14 DIN EN 14622 BS 1212-3:1990 Clause 4 DIN EN 14623 + 3 more
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Kiwa

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UKAS 2360 Brentwood, GB
DIN EN 55011: 2018 IEC/CISPR 22 DIN EN 55016-2-1 IEC 61326-2-2: 2012 IEC 61000-6-1 + 3 more
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Kiwa

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UKAS 0692 Cheltenham, GB
DIN EN 16510-2-3 DIN EN 16510-2-1 DIN EN 13229 DIN EN 16510-1 DIN EN 13240 + 3 more
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Kiwa

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UKAS 2667 Blackwood, GB
DIN EN 55011: 2018 AS/NZS CISPR 11:2004 EN 55011 2016 + A1 2017 + A11 2020 IEC/CISPR 14-1 DIN EN 55013 + 3 more
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UKAS 23015 Mansfield, GB
and Appendix 3 of HSG 227 (2004)) Appendix 5 of HSG 227 (2004))
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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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