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White Papers


Simon Löhe
Metallographer, group leader of Laboratory-Services Munich
Expert in failure analysis and metallography
+49 8106 9941 17


Schedule of service

Technical cleanliness

Within the framework of ParticleCheck we also carry out investigations on the technical cleanliness according to VDA 19 especially for functional relevant automotive parts.

For the clean production  depending on the specification certain requirements for residual dirt must be met to protect the cleanliness sensitive systems, amongst others from abrasive particles. To ensure these requirements, the cleanliness area of the parts should be checked regularly. The VDA 19 in combination with the relevant delivery specifications provides procedures and benchmarks, after which the particles depending on the respective component are obtained, analyzed and documented in a suitable form. Important parameters here are: number, size, division into fiber and particles, non-metallic and metallic particles and other abrasives such as Corundum. Determining a statistic is performed by light microscopy and an automatic measurement software. Striking and critical particles can also be identified via SEM-EDX and a material assignment can be made.

Standard: VDA 19

[Translate to English:] Motorblock zur Überprüfung auf Technische Sauberkeit
[Translate to English:] Abklingkurve zur Festlegung des Abklingkriteriums
[Translate to English:] Makroskopische Aufnahme eines metallischen Partikels, ermittelt durch eine automatische Messsoftware
[Translate to English:] Makroskopische Aufnahme eines Nylonfilters für die automatische Auswertung im Mikroskop.

Society for Materials Testing
Ensuring quality | Accompanying development | Analyzing damage | Passing on knowledge

GWP Gesellschaft für Werkstoffprüfung mbH
Georg-Wimmer-Ring 25
85604 Zorneding/München

Tel. +49 8106 994110
Fax +49 8106 994111

Handelsregister München
HRB 53245
USt.-IdNr. DE131179893

General Manager
Dr. Julius Nickl