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  2. Presumptive and confirmatory tests - Wikipedia

    en.wikipedia.org/wiki/Presumptive_and...

    Kastle-Meyer test for blood; Malachite green test for blood; Marquis reagent for narcotics and alkaloids; Benzidine test for blood which changes from clear to blue in color with the presence of blood; Luminol, phenolphthalein, Hemastix, Hemident, and Bluestar are all also used for blood testing

  3. Erythrocyte sedimentation rate - Wikipedia

    en.wikipedia.org/wiki/Erythrocyte_sedimentation_rate

    An increased number of red blood cells (polycythemia) causes reduced ESR as blood viscosity increases. Hemoglobinopathy such as sickle-cell disease can have low ESR due to an improper shape of red blood cells that impairs stacking. [citation needed]

  4. Physical properties of soil - Wikipedia

    en.wikipedia.org/wiki/Physical_properties_of_soil

    The physical properties of soil, in order of decreasing importance for ecosystem services such as crop production, are texture, structure, bulk density, ...

  5. Body identification - Wikipedia

    en.wikipedia.org/wiki/Body_identification

    Body identification is a subfield of forensic science that uses a variety of scientific and non-scientific methods to identify a body. Forensic purposes are served by rigorous scientific forensic identification techniques, but these are generally preceded by formal identification. [1]

  6. Blood agent - Wikipedia

    en.wikipedia.org/wiki/Blood_agent

    A blood agent is a toxic chemical agent that affects the body by being absorbed into the blood. [1] Blood agents are fast-acting, potentially lethal poisons that typically manifest at room temperature as volatile colorless gases with a faint odor. [1] They are either cyanide- or arsenic-based. [1]

  7. Polyethylene glycol - Wikipedia

    en.wikipedia.org/wiki/Polyethylene_glycol

    Polyethylene glycol (PEG; / ˌ p ɒ l i ˈ ɛ θ əl ˌ iː n ˈ ɡ l aɪ ˌ k ɒ l,-ˈ ɛ θ ɪ l-,-ˌ k ɔː l /) is a polyether compound derived from petroleum with many applications, from industrial manufacturing to medicine.

  8. Hair analysis - Wikipedia

    en.wikipedia.org/wiki/Hair_analysis

    Hair analysis may refer to the chemical analysis of a hair sample, but can also refer to microscopic analysis or comparison. Chemical hair analysis may be considered for retrospective purposes when blood and urine are no longer expected to contain a particular contaminant, typically three months or less.

  9. Crime reconstruction - Wikipedia

    en.wikipedia.org/wiki/Crime_reconstruction

    Crime reconstruction or crime scene reconstruction is the forensic science discipline in which one gains "explicit knowledge of the series of events that surround the commission of a crime using deductive and inductive reasoning, physical evidence, scientific methods, and their interrelationships". [1]