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Phenolphthalein is a highly sensitive presumptive test for the presence of blood
Using a Zephyr® Fiberglass Brush and Bi-Chromatic™ Powder
including chemicals
A piece of frosted tape can be placed across the scale before writing on it
Photo ID Cards Size:Large Phenolphthalein is a highly sensitiveEach time a new roll of film is started at a crime scene, the first exposure should be of a card listing the case number, date, and photographer. Each of these Photo Identifier Cards has a grayscale, a color scale, and spaces for writing necessary case information. Submit the cards with the roll of film so the darkroom technician can match the grayscale and colors to produce a color accurate photograph. Pad of 25. The large Photo ID Card measures 8x10
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