Green 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. **Bichromatic Powder** Bichromatic powder will appear
silver on dark surfaces and black on light silver surfaces, enabling this to
be used on a large range of household objects that may be encountered at a
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.