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How to make florescent ink? Answered

I have Googled and searched Wiki on how to make fluorescent (ultraviolet) inks. I want to know how to make them. I dont want th lemon juice , corn starch, milk or other types of invisible inks. I want to make the stuff the glows under uv light. I searched using uv, ultraviolet, fluorescent inks but couldnt find anything other than the lemon juice and other types of "invisible" writing. Please help if you know where to find or if you know how to make fluorescent (ultraviolet) inks. You can email me at whitethatchpotentloins@yahoo.com I mean the inks that u can buy for handstampers and that are put in invisible ink markers. I want to make the stuff myself and not have to buy it off the internet.... So while yes there are alot of things that glow under UV, I want it in liquid form.


. How about the stuff that carpenters put on their chalk lines? A lot of them are UV reactive. Should be pretty cheap and readily available. Might have to grind it up a bit to get it fine enough. Just a thought.

the ink has to be invisible to the eye so if its fluorescent and you can see it. kind of defeats the point


6 years ago

Anything with conjugated bonds will fluoresce under ultraviolet light.
Vegetable oil would work.

microemulsions fluoresce as well, but for a different reason. Ouzo is a type of alcohol from greece. it actually would work quite well as a microemulsion ink.

heres a list of fuluorescent stuff by wikipedia

laundry detergents containing optical brighteners
Body fluids (those are free)

check out my instructable

A long time ago, I thought I had read that naphthalene dissolved in a solvent and then "painted" onto items would give a distinct glow under UV lamps....but I can't put my finger on it just now...

Not 100% sure, real chemists please help, but I think naphthalene is flammable, used for a type of "napalm". Be very careful.

Yes, when I said "naphthalene" I meant the solid "moth ball" state of it. But yes, it is pretty flammable.

That might do some real damage in today's Plastic everything printers though.

. Nacho's Law: Any mention of bodily fluids, especially by name, is strictly prohibited. Exceptions can be made for posts dealing with health sciences, but euphemisms (preferably as vague as possible) must be used. .

Kiteman, I like you. When I take over the world, you shall live. You shall not even be sent to Siberia with the stupid people. In fact, you shall be granted the city-state of your choice, not to exceed 200 square miles.

That's approximately 518 square kilometers, O conformist.

Can I live? "Shows sad puppy face" lol

Yay!You will live too when I take over the world also...

*deeper background check* Whoops. Sorry. False hopes.

"Picks up gun... Now will you let me live?!" lol

Nacho's Law: Any mention of bodily fluids, especially by name...

I am still trying to figure how to mention them, but not by name ??? LOL

"You know, thingie, nudge,nudgedoo-dah juice ..."

(Hardly journal-worthy, is it?)

:-) Hmm, I was just thinking though, some of the words we use ( like "bled" or "bleed" ) don't always have to do with bodily fluids :-) Bleeding off pressure from a compressor tank...bleeding the master cylinder of a auto's brake system, etc.

take a highliter insert a drinking straw on its tip suck (not until it gets to you !) you got a straw full of nice liquid fluorescent ink

That is risky and unsafe. Use water and rinse it out into a glass or a bottle.


9 years ago

Kerosene also works as a UV ink.


9 years ago

Another homemade ink (an approximate recipe): Dissolve 200mG or greater quinine sulfate tablets (an anti-malarial agent available at many online drugstores) in water. Crush with six tablets per 50mL (around 2 ounces) water to start. Add a few drops of sulfuric acid (you can take a few out of a cell in a fully functional lead-acid car battery with an eyedropper if you do not have sulfuric available), test with your UV source as you add to see when additional acid does not intensify further. The ink dries to an invisible-in-sunlight state which shows up blue under UV.


10 years ago

Intriguing question...

Here's a nice list. Vitamins and quinine water would be worth a try (will they continue fluorescing after drying? You tell us...)

And a minerals page -- calcite (calcium carbonate) might be worth a try...you could find it in antacids (although I looked at some di-gel tablets and they didn't do anything spectacular....)

The best bet is to use a fluorescent dye, but there are so many options...

Thank you great site, but what do I mix with it to make it a liquid like printer ink

. I doubt if you will be able to make your own ink if it's for an ink-jet printer. Making your own ink for a fountain/calligraphy/quill-type pen is pretty easy.
. You need a vehicle that flows well and evaporates quickly. It must also be able to dissolve/suspend the pigment and not react with it. Pure alcohol (ethyl or isopropyl) works reasonably well in some cases.
. If your pigment doesn't stick well, you may need a binder (glue).
. Google ink formulation

that zippeite stuff looks awesome


10 years ago

Laundry detergent usually contains UV-active "brighteners." Lots of things glow; your "real" problem may be making sure it's invisible under normal lighting, and doesn't show up when subjected to other "invisible ink" mechanisms (lots of things will cause "inked" paper to turn brown when heated...)

Yes thats what Ive found so far, but my question is how to make itin a liquid form that doesnt need heat but a UV light to see

. Are you looking to make "invisible" ink or just an ink that is UR-reactive? . Most inks/paints are composed of three parts: pigment, vehicle, and binder. Try searching for "UV pigment".

Both I would like ink with as little color under visible light as possible and be UV reactive. And thx Ill look that up.

highlighter works, but it's not invisable quinine works, I'm going to boil down some tonic water to see if it glows better cause it'll be more conecentrated.

bleach and bleach alternatives glow under uv.