We have a variety of UV inks.
Good rules of thumb are that
Sunlight stable inorganic phosphor based inks:
Organic based inks:
We can custom make ink dispersions or suspensions out of almost any of our phosphors or pigments using either a water based acrylic clear coat or solvent based clear coat. You can use our paint ball valve type refillable pens with any of our inks.
Phosphors, dyes and inks all have specific excitation and emission curves. Sometimes the curves can be quite specific and other times quite broad. Some longwave materials may fluoresce strongly at 365nm but not much at 400nm, so make sure that your excitation sources matches the material that you are using. Customers should also be aware the UV LED flashlights are often miss-rated to have a lower peak wavelength than their actual wavelength. This is quite common with Chinese lights because the shorter wavelength LED's are much more expensive than the longer ones. For example, even the a seller might think they have a 365nm UV LED light, when we measure the light with our spectrometer, we find that it is actually a 390nm UV LED light.