Black Emerald™ Magnetic Fingerprint Powder, 1 oz.Viewed under an alternate light source or laser, Black Emerald™ will fluoresce as bright green
- Extremely sensitive to long wavelength ultraviolet light (approx. 365nm)
- Can be viewed and photographed without a viewing filter.
- Can also dual-purpose as black latent print powder producing rich, easy-to-photograph black prints on light surfaces