# Forensic Science Technicians > Collect, identify, classify, and analyze physical evidence related to criminal investigations. Perform tests on weapons or substances, such as fiber, hair, and tissue to determine significance to investigation. May testify as expert witnesses on evidence or crime laboratory techniques. May serve as specialists in area of expertise, such as ballistics, fingerprinting, handwriting, or biochemistry. - Code: 19-4092.00 (O*NET-SOC; SOC 2018 19-4092) - Family: [Life, Physical & Social Science](https://foundation.org.ai/occupations#family-19), one of its 66 occupations - Tasks: 24 tasks (15 core and 9 supplemental) - Page: https://foundation.org.ai/occupations/19-4092.00 - JSON: https://foundation.org.ai/data/tasks/19-4092.00.json ## What the work is made of 1. Collect evidence from crime scenes, storing it in conditions that preserve its integrity. Core task · Task 1577 · Rated by 83 people who do the job, August 2023 2. Keep records and prepare reports detailing findings, investigative methods, and laboratory techniques. Core task · Task 18478 · Rated by 83 people who do the job, August 2023 3. Use photographic or video equipment to document evidence or crime scenes. Core task · Task 20399 · Rated by 83 people who do the job, August 2023 4. Testify in court about investigative or analytical methods or findings. Core task · Task 1571 · Rated by 83 people who do the job, August 2023 5. Use chemicals or other substances to examine latent fingerprint evidence and compare developed prints to those of known persons in databases. Core task · Task 18479 · Rated by 83 people who do the job, August 2023 6. Measure and sketch crime scenes to document evidence. Core task · Task 23965 · Rated by 83 people who do the job, August 2023 7. Visit morgues, examine scenes of crimes, or contact other sources to obtain evidence or information to be used in investigations. Core task · Task 1584 · Rated by 83 people who do the job, August 2023 8. Train new technicians or other personnel on forensic science techniques. Core task · Task 18481 · Rated by 83 people who do the job, August 2023 9. Operate and maintain laboratory equipment and apparatus. Core task · Task 1574 · Rated by 83 people who do the job, August 2023 10. Collect impressions of dust from surfaces to obtain and identify fingerprints. Core task · Task 1582 · Rated by 83 people who do the job, August 2023 11. Examine and analyze blood stain patterns at crime scenes. Core task · Task 18482 · Rated by 83 people who do the job, August 2023 12. Analyze gunshot residue and bullet paths to determine how shootings occurred. Core task · Task 1583 · Rated by 83 people who do the job, August 2023 13. Confer with ballistics, fingerprinting, handwriting, documents, electronics, medical, chemical, or metallurgical experts concerning evidence and its interpretation. Core task · Task 1589 · Rated by 83 people who do the job, August 2023 14. Prepare solutions, reagents, or sample formulations needed for laboratory work. Core task · Task 1575 · Rated by 83 people who do the job, August 2023 15. Examine footwear, tire tracks, or other types of impressions. Core task · Task 23966 · Rated by 83 people who do the job, August 2023 16. Examine physical evidence, such as hair, biological fluids, fiber, wood, or soil residues to obtain information about its source and composition. Supplemental task · Task 23967 · Rated by 83 people who do the job, August 2023 17. Reconstruct crime scenes to determine relationships among pieces of evidence. Supplemental task · Task 1580 · Rated by 83 people who do the job, August 2023 18. Determine types of bullets and specific weapons used in shootings. Supplemental task · Task 20401 · Rated by 83 people who do the job, August 2023 19. Review forensic analysts' reports for technical merit. Supplemental task · Task 20400 · Rated by 83 people who do the job, August 2023 20. Interpret laboratory findings or test results to identify and classify substances, materials, or other evidence collected at crime scenes. Supplemental task · Task 1573 · Rated by 83 people who do the job, August 2023 21. Compare objects, such as tools, with impression marks to determine whether a specific object is responsible for a specific mark. Supplemental task · Task 1590 · Rated by 83 people who do the job, August 2023 22. Identify and quantify drugs or poisons found in biological fluids or tissues, in foods, or at crime scenes. Supplemental task · Task 1578 · Rated by 83 people who do the job, August 2023 23. Examine firearms to determine mechanical condition and legal status, performing restoration work on damaged firearms to obtain information, such as serial numbers. Supplemental task · Task 1587 · Rated by 83 people who do the job, August 2023 24. Analyze data from computers or other digital media sources for evidence related to criminal activity. Supplemental task · Task 23969 · Rated by 83 people who do the job, August 2023 ## More in Life, Physical & Social Science - [Agricultural Technicians](https://foundation.org.ai/occupations/19-4012.00): 26 tasks - [Animal Scientists](https://foundation.org.ai/occupations/19-1011.00): 9 tasks - [Anthropologists and Archeologists](https://foundation.org.ai/occupations/19-3091.00): 30 tasks - [Astronomers](https://foundation.org.ai/occupations/19-2011.00): 17 tasks - [Atmospheric and Space Scientists](https://foundation.org.ai/occupations/19-2021.00): 27 tasks - [Biochemists and Biophysicists](https://foundation.org.ai/occupations/19-1021.00): 24 tasks - [Bioinformatics Scientists](https://foundation.org.ai/occupations/19-1029.01): 20 tasks - [Biological Scientists, All Other](https://foundation.org.ai/occupations/19-1029.00): no tasks listed - [Biological Technicians](https://foundation.org.ai/occupations/19-4021.00): 17 tasks - [Biologists](https://foundation.org.ai/occupations/19-1029.04): 21 tasks - 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Nothing on this page is written by the Org.AI Foundation.