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The CFSL (CBI), New Delhi has the following divisions which are rendering forensic support services to the various Investigating Agencies in scientific analysis of exhibits and collection/detection of relevant physical clues from scenes of crime. The scientists of the laboratory are put to rigorous trainings in India and abroad in order to upgrade the existing forensic skills and to induct innovative technologies in the field of Forensic Science.
Ballistics & Explosives Division
The Division is equipped with requisite technology and expertise to handle cases of firearms and explosives. The work involves examination of firearms to determine the nature and type of weapons used in the crime; range of firing, linking fired bullets/cartridge cases with the suspect weapons and checking of mechanism of the weapon for the evidence of accidental discharge.

The analysis of explosives involves the examination and opinion on explosives (Civil, Military and IEDs) and explosive devices used in crime, riots, police firing, encounters etc. re-construction of scene of crime/ explosion etc. laboratory analysis of explosives and their detection. For up-gradation of the working of explosives and explosion residue analysis, this Division is equipped with sophisticated instruments like HPLC System (High Performance Liquid Chromatography).
Biology Division and DNA Profiling Unit
The division is equipped with the state-of-art technologies and expertise to carry out all types of analytical works related to forensic biology. The biological analysis includes detection and establishment of any biological fluids like blood, semen, saliva, urine, sweat and milk. Further, the laboratory has been fabricated to carryout accurate microscopic examinations related to hair, fibre, tissue and botanical exhibits. In addition to the above the DNA Profiling Laboratory is being operated under the supervision of Biology Division.

The division reports cases of various natures like murder/homicides, suicides, assaults, unnatural sexual offences, dacoity, robbery, theft, riot and others offences enlisted in Arms Act, Prevention of damage of property Act, etc.
Chemistry Division
The Division consists of Toxicology, Narcotics and General Chemical Analysis Sections. This division is equipped with high- tech analytical equipments and undertakes Chemical Analysis of exhibits such as viscera, biological fluids, trap cases, dowry death cases, petroleum products, acids and various other miscellaneous exhibits referred by the Investigating Agencies. Viscera including biological fluids are examined for poison detection in cases of homicides and suicides. Research and Development activities to meet the specific needs are also form a part of the programme in bringing up the latest techniques and instrumental methods of analysis.
Document Division
In the Document division, examination of hand writing, signatures, type scripts, rubber stamp impressions, seal impressions, examination of counterfeit currency notes and lottery tickets, determination of interpolation, substitution, addition, over writings, decipherment of the mechanically and chemically erased writings, decipherment of invisible ink, re-construction of the charred and burnt documents, determination of the order of the sequence of the strokes at the point of intersections, examination of the torned or serrated edges of paper and comparison with their counterparts, determination of the absolute or relative age of the documents, examination of ink, paper and writing implements etc. are carried out.
Finger Print Division
The Finger Print division examines the questioned thumb impressions, crime scene visits for chance prints, developments of latent prints, preparation of specimen ten digit finger prints of accused. High Power laser beam light sources and portable equipment namely High Intensity Light Source for development of chance prints at the scene of crime was inducted in this division.
Forensic Psychology Division
In India CFSL, CBI, New Delhi is the first one to establish a full-fledged Lie Detection Division. Since its inception, approximately 10,000 subjects have been conducted to Lie Detection Tests for detection of deception. The Division extends its services not only to the CBI, but also to the Delhi Police and other law enforcement agencies of the country in almost all the cases of national importance. The Forensic Psychology Division equipped with latest version of Computerized (Desktop and Laptop) Polygraph equipments. NHRC guidelines are strictly adhered when conducting the polygraph examinations.

Click here for NHRC guidelines

The Division carried out Personality Assessments, Criminal Profiling in some of the important CBI Case Investigations. The division has initiated action programme for induction of the state-of-the-art technology for analysis of information present in the brain of the subject and Voice Stress Analysis.
Photo & Scientific Aid Division
Photography Division provides Videography and General Photography assistance to all divisions of CFSL/CBI in the examination of crime exhibits, coverage of scenes of crime, close-up, conferences & seminars. Experts of the division also provide the expert opinions on questioned photo prints. In addition, transfer of analog video data to digital form is also done with precision. Photo division has latest state-of-art-technology video measurement system to examine the authenticity of video films.
Physics Division
In Physics division different types of examinations are carried out like examination of paint, glass, soil, fibres, metallic pieces, threads and ropes, cloth pieces, struggle mark and cut marks on cloth, knot examination, examination of metallic seals, postal seals, deciphering of erased chassis and engine number of vehicles, registration plate of vehicles, examination of tool marks, etc. The division is also carrying out the examination of telephonic and direct recording to identify the Speaker. A very advanced version of computerized Voice Spectrograph namely Computerized Speech Lab Model CSL-4500 is being used for analysis of Speaker Identification cases.

In addition to these activities, the Physics division often visits the scene of crime and also undertakes the task of reconstruction of scene of crime. The division has undertaken new project work in the field of Noise reduction/signal enhancement and Audio tape Authentication.
Serology Division
The scientific support provided by the Serology division includes the determination of origin & species of body fluids, tissues, saliva, semen and other body materials. The reported cases consist of murder, causing death due to negligence, culpable homicide not amounting to murder, attempt to murder causing hurt, sexual offences (Rape/Sodomy), inquiry into cause of death, and of miscellaneous nature.
Computer Forensic Division
Computer Forensic Division started functioning since January 2004. Its main objectives are preservation, identification, extraction and documentation of computer evidence in various Computer related crimes forwarded to the laboratory. Computer Forensics involves the use of sophisticated technology, tools and procedures. The accuracy of evidence processing procedures is ensured by using multiple software hardware tools developed by separate and independent developers. Validation through the use of multiple software tools and procedures by the computer experts eliminate the potential problem.
Scientific Aid Unit
The scientific Aid unit was created at Chennai to provide document related examination and analysis to the local branches of CBI.
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