5 felt pen ink ultraviolet invisible ultraviolet lamp with purple

INVISIBLE INK PEN PEN INVISIBLE SIGN PENS WRITING INVISIBLE DETECTOR and counterfeit
This pen with invisible ink is revealed in the presence of ultraviolet light .
You will keep all your secrets Thus stories :
A blank page will be filled with confidential information without anyone suspecting .
To read the writings made ??, use a torch to ultraviolet
or ultraviolet LED integrated into the pen with invisible ink.
This pen allows invisible marking equipment.
Very useful to identify stolen goods .
The applications are many and varied :
Warranty date , serial number , owner name , etc.

We recommend that you use (ref. DFPBI ) (portable lamp and small ) or any other counterfeit detector (ref. DFB) (ref. DFBP ) (ref. DFBPIG ) . The ink remains invisible for several years without ultraviolet lamp . The invisible ink becomes visible using an ultraviolet lamp . Note: We do not sell yet invisible ink, but we sell the following products: secret diary with a pen uv invisible ink spy security information (ref. VDLIIP ) confidential agenda.