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Details

Local Identifier
AAJ-0102
Title
Police technician testing for traces of blood
Date
1950-07-19
Physical Location
San Francisco History Center, San Francisco Public Library
Shelf Location
SFP 162. S.F. Police. Crime Lab
Type
Still image
Extent
1 photographic print : b&w ; 6 x 8 in.
Format
Photographic prints
Photographs
Usage Statement
All requests for permission to publish from photographs must be submitted in writing to the Photo Curator. Permission for publication is given on behalf of the San Francisco Public Library as the owner of the physical items.
Rights Statement
In copyright.
Note
Newscopy: Leonard R. Wiebe, police technician, demonstrates a simple test which invariably spotlights the slightest trace of human blood. A drop of a mixture of hydrogen peroxide, acetic acid and benzidine produces a blue stain on rag being tested if any blood is present.
Language
English
Subject (Corporate)
San Francisco (Calif.). Police Department
Subject (Topic)
Acetic acid
Benzidine
Crime laboratories
Forensic sciences
Hydrogen peroxide
Geographic Coverage
San Francisco (Calif.)--Photographs
Record Appears in
San Francisco Historical Photographs > San Francisco Subjects Photograph Collection

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