AККРЕДИТАЦИЯ СУДЕБНО-ЭКСПЕРТНЫХ УЧРЕЖДЕНИЙ И СЕРТИФИКАЦИЯ СУДЕБНЫХ ЭКСПЕРТОВ В ЛАТВИИ

The paper consists of two parts. The !rst describes the process of accreditation offorensic institutions in Latvia. References to standards, preparation for accreditationand validation of methods is also given in the article. The second part of the articlefocuses on the certi!cation of forensic experts in Latvia: describes the training programof candidates, the process of certi!cation and recerti!cation of experts, as well as thenational register of court experts.Статья состоит из двух частей. В первой части описывается процесс аккредитациисудебно-экспертных учреждений в Латвии, даются ссылки на стандарты и описаниеподготовки к аккредитации: валидация методов, управление записями исследований идругие требования. Вторая часть посвящена вопросам сертификации судебных экспертов в Латвии: описываются программа обучения кандидатов, процесс  сертификации и переаттестации экспертов; а также реестр судебных экспертов

Profiling and imaging of forensic evidence – a pan-European forensic round robin study part 1: document forgery

The forensic scenario, on which the round robin study was based, simulated a suspected intentional manipulation of a real estate rental agreement consisting of a total of three pages. The aims of this study were to (i) establish the amount and reliability of information extractable from a single type of evidence and to (ii) provide suggestions on the most suitable combination of compatible techniques for a multi-modal imaging approach to forgery detection. To address these aims, seventeen laboratories from sixteen countries were invited to answer the following tasks questions: (i) which printing technique was used? (ii) were the three pages printed with the same printer? (iii) were the three pages made from the same paper? (iv) were the three pages originally stapled? (v) were the headings and signatures written with the same ink? and (vi) were headings and signatures of the same age on all pages? The methods used were classified into the following categories: Optical spectroscopy, including multispectral imaging, smartphone mapping, UV-luminescence and LIBS; Infrared spectroscopy, including Raman and FTIR (micro-)spectroscopy; X-ray spectroscopy, including SEM-EDX, PIXE and XPS; Mass spectrometry, including ICPMS, SIMS, MALDI and LDIMS; Electrostatic imaging, as well as non-imaging methods, such as non-multimodal visual inspection, (micro-)spectroscopy, physical testing and thin layer chromatography. The performance of the techniques was evaluated as the proportion of discriminated sample pairs to all possible sample pairs. For the undiscriminated sample pairs, a distinction was made between undecidability and false positive claims. It was found that none of the methods used were able to solve all tasks completely and/or correctly and that certain methods were a priori judged unsuitable by the laboratories for some tasks. Correct results were generally achieved for the discrimination of printer toners, whereas incorrect results in the discrimination of inks. For the discrimination of paper, solid state analytical methods proved to be superior to mass spectrometric methods. None of the participating laboratories deemed addressing ink age feasible. It was concluded that correct forensic statements can only be achieved by the complementary application of different methods and that the classical approach of round robin studies to send standardised subsamples to the participants is not feasible for a true multimodal approach if the techniques are not available at one location

ACCREDITATION OF FORENSIC SCIENCE ORGANIZATIONS AND CERTIFICATION OF FORENSIC EXAMINERS IN LATVIA

The paper consists of two parts. The !rst describes the process of accreditation offorensic institutions in Latvia. References to standards, preparation for accreditationand validation of methods is also given in the article. The second part of the articlefocuses on the certi!cation of forensic experts in Latvia: describes the training programof candidates, the process of certi!cation and recerti!cation of experts, as well as thenational register of court experts