Sirchie Acid Yellow 7 Dye Solution Mixture for Blood Evidence Enhancement

While the Sirchie Acid Yellow 7 may appear to be a simple dye solution mixture, it serves a crucial role in forensic investigations, specifically for enhancing the visibility of blood-based fingerprints and shoeprints. This unique solution has the ability to stain these blood prints a distinct yellow color, which subsequently fluoresce under the illumination of blue or blue-green light, making them easier to detect and analyze.

However, it's important to note that the Acid Yellow 7 is not designed for use on absorbent surfaces such as paper, cardboard, fabric sheets, or carpeting. Its effectiveness shines through when applied to non-absorbent surfaces, including but not limited to linoleum, glass, tile, or painted surfaces.

To ensure the preservation of intricate details within the blood prints, they should be fixed prior to the application of the Acid Yellow 7 solution. This can be achieved by using a 2% solution of 5-sulphosalicylic acid, which prevents the prints from running and losing their detail during the staining process.

The Sirchie Acid Yellow 7 is conveniently supplied in an 8 oz bottle, complete with a spray head for easy application. This product is an essential tool for forensic professionals, aiding in the detailed investigation of blood evidence.