The success of CFLP experts participating in the 1st International Proficiency Test „Ink dating” organized by the European Network of Forensic Science Institutes (ENFSI)

Publication date 07.11.2013

Experts of the Central Forensic Laboratory of the Police: Hubert Deptuła (forensic examiner in questioned documents) and dr Robert Bachliński (forensic chemist) took part in the First International Proficiency Test “Ink dating”. The method belongs to the most challenging one in the area of questioned documents.

Seven laboratories took part in “Ink dating” exercise:
  • Bundeskriminalamt, KT 41, Wiesbaden (Germany)
  • Canada Border Services Agency, Ottawa (Canada)
  • Forensic Institute Zürich, Zürich (Switzerland)
  • Hessisches Landeskriminalamt, Wiesbaden (Germany)
  • Landeskriminalamt NRW, Düsseldorf (Germany)
  • Central Forensic Laboratory of the Police, Warsaw (Poland)
  • State Forensic Science Bureau, Riga (Latvia)
The analysis aimed at age determination of three samples of ink entries. Participants were taking advantage of various analytical instrumentation, such as GC-MS, HPLC, different methods of sample preparation (thermal desorption, extraction, artificial ageing) as well as methods for elaboration of findings (Neumann trend test and others).
The results of proficiency test demonstrated that the Central Forensic Laboratory of the Police obtained error free findings, which attest to high qualifications and experience of experts as well as the effectiveness of in-house developed guidelines “Methodology for determination of age of ink entries”.