Small Particle Reagent (SPR) is quick, inexpensive and effective on fresh fingerprints. SPR is composed of finely ground particles suspended in a detergent solution. These particles adhere to the fatty constituents of latent fingerprints to form a visible deposit. Latent prints developed using this…

Leuco crystal Violet reacts with the heme-group in blood to give a violet color. Its application can be used to identify bloodstains that are not visible and to enhance and provide additional contrast to bloodstain patterns that are visible. This compound is ideal for developing visible and…

Fluorescent powders offer the best of two worlds: top quality, finely milled iron particles blended with contrasting, brilliant fluorescent powder. Fluorescent fingerprint powders have increased in popularity over the last few years. This increase is the result of the more frequent use of alternate…

Preferred method for processing thermal paper and items sensitive to heat. May be used on any porous item needing latent development. May be especially useful on colorful backgrounds since there is high fluorescence when viewed with ALS. Best results usually visualized between 475nm and 515nm with…