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Latent Fingerprints:Silver Nitrate

By:Charles Wheeler

Silver Nitrate is the oldest known chemical

technique for fingerprint detection on porous

surfaces such as paper.

How can you detect fingerprints using Silver Nitrate?

When you expose light to silver chloride (white in color) is decomposed to a silver metal, then a black image is porduced of the fingerprint.

What surfaces can silver nitrate be useful on?

Paper, cardboard, plastics, and unvarnished,

light-colored woods.

Silver Nitrate reacts with the chloride component of the latent fingerprint deposit to form a light sensitive silver chloride

By: Charles Wheeler

By: Charles Wheeler

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