These are the basics of all latent print processing
NINHYDRIN reacts with Amino Acids and creates a purple image. Good for most porous items
SILVER NITRATE is simple to use and reacts with the salts in sweat to create a town latent image. Good for items such as cardboard and old wood.
DYE STAINS are great for making superglue prints easy to photograph
PATENT PRINTS are those prints that can be seen without enhancement, like this blood fingerprint left at a crime scene
Amido Black can be used to enhance bloody prints that are otherwise only partially visible.