?:definition
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Laboratory hoods designed to provide a working enclosure appropriate for fingerprint development using chemicals, such as fingerprint powder (e.g., ethyl cyanoacrylate). These hoods are typically a small, hard plastic enclosure with a metal (e.g., stainless steel) working surface; the hood may provide an internal vertical (usually downward) airflow that minimizes the risk of exposure for the operator. They may also include fluorescent lights, a fan for uniform distribution of the fuming products, external air filters or internal carbon filters, and a humidifier. Fingerprint development hoods are used in laboratories and also by police officers to detect and process hard-to-find (i.e., latent) fingerprints on forensic evidence.
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