The Chemical Sciences Section deals with a wide variety of cases, with particular emphasis on offences against the person and against property. The work of the section is broadly divided into three categories:
In addition to laboratory work, the professional staff of the section are also responsible for attending suspicious fire scenes to establish the cause of fire.
While the examination of miscellaneous chemical and liquor involves mainly straightforward instrumental analysis work, trace evidence examination is often painstaking and labour intensive. This area of work includes the examination of such trace materials as textile fibres, glass, paint and soil. Although costly in terms of manpower and working time, trace evidence frequently plays a major part in the evidence produced in major crime investigations, justifying the input and commitment apportioned to it.
Key instruments in the section :
Targets are defined as the percentage of completed cases whose individual case-completion time does not exceed a specified number of working day(s)
|Trace evidence completed within 66 working days (%)#||90||82||84||90|
|Miscellaneous Chemical Investigation completed within 33 working days (%)||90||87||83||90|
|Fire investigation completed within 88 working days (%)||90||100||100||90|
|#||The performance has been affected by the growing demand on video/image analysis, a category of work that the Laboratory introduced since 2019.|
Key indicators are the number of cases investigated
|Number of Cases Investigated||2019
|Miscellaneous Chemical Investigation||361||411||420|