Yellow Fluorescent Powder (59ml)(BN/EXP)

Every crime scene examiner will have a range of fingerprint powders at their
disposal. Different powders are suitable for use on surfaces and it is
important to be aware of which work best in different situations before they
arrive at the scene. **Black and White Powders** Black powders work well on
clear or light coloured surface, and white on black surfaces. The objective
with each powder choice is to obtain the greatest contrast possible for
photography and comparison. **Fluorescent Powders** Fluorescent powders have a
very light base and require a light touch to obtain the best results. Try
using a Marabou Duster for perfect results, but these are ideal for patterned
surfaces where one single colour of powder will not give great contrast, as
with a UV lamp the powder will fluoresce in the dark allowing a photograph to
be taken with great contrast. With or without the UV lamp these are very
popular with pupils. **Metallic Powders** Ideal for smooth surfaces such as
glass, metallic flake powders are very successful for many prints and work
best with fibreglass brushes. Choose the colour which gives the best contrast
for the surfaces you will be using or have your pupils experiment with both.