Opticz Blacklight Reactive Invisible Blue Ink All Purpose UV Marker with UV Light

This is that hard to find UV Blacklight Reactive Invisible Ink for box marking, document marking, and other unique security applications. Only visible under black light. Ink is water proof and very difficult to remove. Best viewed in dark or shaded area. Opticz Blacklight Reactive Invisible Printing Inks are suitable for paper marking as well as non-pourous material marking.

DirectGlow Blacklight Reactive Invisible UV Ink Marker Pen Large 3 Section Blue Red Yellow for Ultraviolet Security Secret Messages Drawing Glow Party Favor (3 Markers with 3 Blacklights) - Yahoo Shopping

Invisible Ink Marking

IDENTI-SPY Invisible Ink Dauber Marker With Uv Light

Uv Marking

Invisible Ink Marking Kit Includes: (1) Identi-Spy Marker & (1) 9 Led Uv Light. Requires 3 AAA batteries not included. IDENTI-SPY Invisible Ink Dauber Marker is a water based ink seen only with long-wave uv light Black Light. Can mark paper, cardboard, cloth, and much more. Great for hand marking security entry points. For marking hard non porous surfaces the marks can be easily removed with a damp cloth. The perfect cleaning inspection tool. Did staff really clean - or - didn't they.

IDENTI-SPY Invisible Ink Dauber Marker with UV Light

Invisible Marking

DirectGlow Blacklight Reactive Invisible UV Ink Marker Pen Large 3 Section Blue Red Yellow for Ultraviolet Security Secret Messages Drawing Glow Party Favor (3 Markers with 3 Blacklights) - Yahoo Shopping

Invisible Blue Pen

Invisible Blue Ink

Opticz XL Red Blacklight Reactive Large Tip Invisible UV Ink Security Marker