Sebaceous Residue
Definition
The oily secretion from sebaceous glands, containing triglycerides, fatty acids, squalene, and waxes, that makes up an increasing proportion of aged latent print residue as the aqueous fraction evaporates.
Related terms
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- Bichromatic Powder
- A two-component powder mixture containing both black and white particles that produce visible contrast on substrates of mixed or uncertain reflectance.
- Eccrine Residue
- The water-based secretion from eccrine glands in friction-ridge skin, containing water, amino acids, salts, urea, and lactic acid; the primary component of...
- Gel Lifter
- A tacky gelatin sheet used to transfer developed fingerprint impressions from textured or three-dimensional surfaces where conventional adhesive tape would not conform;...
- Hinge Lifter
- A pre-assembled lifting unit in which a clear acetate film hinged to a backing card is folded over a developed print, pressed,...
- Magnetic Powder
- An iron-oxide-based latent print development powder applied with a magnetic wand rather than a brush, making near-zero contact with the substrate surface...
- Magnetic Wand
- A stylus containing a retractable internal magnet that draws magnetic powder into a cluster at the tip for application to surfaces; retraction...
- Non-Porous Substrate
- A surface (glass, gloss metal, polished plastic) that does not absorb latent print residue, retaining it on the surface and making it...
- Porous Substrate
- A surface (paper, uncoated cardboard, raw wood) that absorbs the aqueous component of latent print residue into its matrix, making powder development...
Explained in
- Powder Methods and the Latent Print Lifting WorkflowThe oily secretion from sebaceous glands, containing triglycerides, fatty acids, squalene, and waxes, that makes up an increasing proportion of aged latent pri...