Classroom kits with regular white powder can be used with success on glass, counter tops, table tops, painted surfaces, cabinets and many other non-absorbent surfaces. Detectives use regular powder on the painted exterior of stolen vehicles on on car glass. White powder is ideal for dark surfaces. This kit was created and priced for educational use. It has enough supplies for 4 work groups. The latent fingerprint kit is is a real print kit, fully stocked, with instructions. Includes enough supplies for at least 100 different print lifts. Each kit also includes a 60 page FBI Fingerprinting Manual on a USB drive.