UV sensitive pens (invisible ink)

[express.items]

Where can I buy a pen/marker that has UV sensitive ink that is only visible under UV light? Looking to buy locally in GTA... or is there a way I can make invisible ink?

[najibs]

is there a way I can make invisible ink?

Yep, just take a UV light to your bedsheets, and you'll see how.

[express.items]

Yep, just take a UV light to your bedsheets, and you'll see how.

LOL.. anything else UV sensitive? In all seriousness... something more readily available.

[Jimmerang]

ahaha you guys giving him such a hard time =P

[rafiki]

club soda

http://chemistry.about.com/cs/howthi...blacklight.htm

[express.items]

club soda

http://chemistry.about.com/cs/howthi...blacklight.htm

cool thanks, now i need to come up with a way to write with soda

[techwiz]

I think I've seen some of these pens at the dollar store... not sure how good they are though.

[tet8suo]

Yep, just take a UV light to your bedsheets, and you'll see how.

Those liquid are UV sensitive? Never thought of that

[express.items]

I think I've seen some of these pens at the dollar store... not sure how good they are though.

I swear I've seen them as well, I should really go look again, I asked my friends and they think I'm crazy for thinking dollar store has it, and I haven't had time to check.

Those liquid are UV sensitive? Never thought of that

Well according to...

club soda

http://chemistry.about.com/cs/howthi...blacklight.htm

some detergents are sensitive and some bodily fluids apparently.