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Product Details & Technical Data Sheet

Security Inks
Invisible pH Inks


Invisible pH Inks are formulated specifically for Security printing and authenticity of Secure documents where a permanent, but invisible reaction is required.  The invisible portion of the ink will fluoresce under long wavelength UV light at a specific color, once an alkali or an acid is applied.  These inks will change the fluorescing color completely without effecting on the visual appearance.


Invisible pH Inks can be printed utilizing Silkscreen, Flexographic or Rotogravure printing methods.  These inks are produced in Ultraviolet Curable Varnish, as well as Waterbased systems.

Invisible pH Inks are available in Yellow, Green and Blue.


Invisible pH Inks are packaged in 1-gallon and 5-gallon containers.