White Papers


White Papers


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


Schedule of service

Particle analysis

The characterization of particles is for a variety of industries of great interest. For technical equipment, products and processes, the knowledge of its origin and possibly harmful effects is an important information. The GWP identified important characteristics of particles or fibers such as chemical composition, size, proportion and habitus by scanning electron microscopy, including X-ray elemental analysis (SEM-EDX). This method suits particularly metallic and inorganic particles. Organic particles of appropriate size can be identified and allocated to according to our database via infrared spectroscopy (FTIR ).

Examination methods:
"Qualitatively": Depending on the enquiry individual particles can be studied accurately ( 20 to 30 ), identified and combined to representative particle types (for example " low-alloyed Cr - steel ", " brass ", " white metal ", etc.), as well as assigned to a source.

"Quantitatively": For an overview of the sample regarding the number, size distribution and allocation in approximate material classes (e.g. "steel", "copper", "tin") the particles are evaluated and tabulated by image fields. The particle number can then be extrapolated to the entire filter.  

Please pay attention to our technical information about ParticleCheck.

Standard: AV 273

[Translate to English:] Makroaufnahme eines mit Partikeln belegten Filters
[Translate to English:] Elementverteilungsübersicht (REM-EDX) über mit Partikeln belegten Filter
[Translate to English:] Auszug aus einem qualitativen ParticleCheck-Bericht
[Translate to English:] Auszug aus einem quantitativen ParticleCheck-Bericht

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

Ein Unternehmen der