In the Evidence Processing Room of the Santa Ana,California,Police Department's forensics laboratory,a technician examines an envelope for latent fingerprints using ninhydrin analysis. The process produces a purple colour as proteins in fingerprints react with ninhydrin. She wears a face mask to protect herself from chemical fumes | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Grant, Spencer |
Taille de l’image : | 2912 px × 4368 px |
Model Release : | Disponible |
Property Release : | Non requis |
Restrictions : |
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