Dual-Purpose Fingerprint Powder
Sirchie's dual-purpose latent print powders have the ability to contrast with both light and dark surfaces, and allow for backing on either white or black backing cards. This offers the CSI greater flexibilty to tackle a wider variety of unpredictable situations at the crime scene.
Using the correct powder is extremely important. Considerations for the powder are:
• The powder’s sensitivity to secretions
• The powder’s adherence qualities
• The powder’s reproduction capabilities
When using latent fingerprint powder:
• Never dip the brush directly into the powder jar. Measure out a small quantity on paper. Less is best.
• Carefully sweep the surface being examined with the brush or wand. A swinging motion or side-to-side motion will both work.