Chemistry
What functional groups allow amido black to bind with
proteins?
Amido and sulfonic acid groups
Name a commonly used fixative before applying Amido black ?
Methanol or acetic acid.
Why might Amido black fail to detect blood on certain surfaces ?
Highly textured or absorbent surfaces may obscure results
How is Amido black used in combination with finger print detection methods ?
used after Cynoacrylate fuming or ninhydrin for enhancing bloodstain
What type of criminal investigation frequently use Amido black?
Crime involving Blood
What is the pH range where Amido black stain is most effective ?
pH 6.8 to 7.2
Why is it important to fix bloodstains before applying Amido black ?
To prevent smearing or loss of blood evidence during staining
What is one disadvantage of using Amido black compared to luminol ?
Luminol is more sensitive and works on invisible stains with out background staining
Name a surface where Amido black is particularly effective for latent bloodstains ?
Porous surfaces like paper or cloth
Amido black helped confirm bloody footprints in which type of scene ?
Scene involving tracking of someone injured or an assault took place