Search Products Shop by Category  Astronomy, Space  Batteries, Power Supplies  Biology  Books  Chemistry  Clocks, Watches  Crystal Growing  da Vinci Gear  Dinosaurs  Einstein Stuff  Electronics  Fun, Toys & Gifts  Games & Puzzles  Geology & Fossils  Glow-in-the-Dark  Laser Pointers  Light & Optics  Magnets  Microscopes  Physics  Posters, Postcards  Robots  Science Kits  Software & Videos  Solar Stuff  Study Charts  Telescopes  Videos (DVD)  Weather Instruments Shop by Price:  under $5  $5 to $10  $10 to $20  $20 to $50  $50 and up Shop by Age:  5 years old  6 - 7 years old  8 - 9 years old  10 - 11 years old  12 and older Store Info:  Catalog Request  Help / FAQ  Contact Us  Terms Of Use Order Tracking: Order No.: Password:		Cart items: 0 Total: $0.00     Spy Pen »  Science eStore Home  »  Glow-in-the-Dark  »  Spy Pen Price: $12.99 Sale Price: $8.50 each Item No: PL374 Sold Out: Check back in 2-4 weeks to order this item. This combination invisible ink marker and UV blacklight flashlight is guaranteed to produce hours of fun! It writes with invisible ink made of special high-brightness ultraviolet viewable compounds. This means the ink is invisible under normal light! Once the message has been written in invisible ink it's time for the blacklight. Ok, so technically it's not really a 'black' light, but that's the popular term for ultraviolet energy near the visible spectrum of light. Flip the pen over, shine the light on the spot where the ink was used and your hidden message will be illuminated! Blacklight are used for a wide variety of applications including sanitation, particle identification, art displays, color matching, raves, parties, and, in this case, revealing secret spy messages! CAUTION: Although it appears invisible, the ink is permanent and will not wash out of most surfaces. If applied to skin it will eventually wear off. Size: 5 in long, 0.5 in in diameter Batteries: Uses four standard LR41 watch batteries (included!) Comes packaged on a blister card with instructions printed on the back. Recommended for ages 5 and older. Weight: 0 lb 1 oz ( 0.03 kg ) Related Products   Invisible Ink UV ID-It Kit Be the hit of the party, make your own glow-in-the-dark designs with this invisible UV responsive ink + UV blacklight. Item No: PL249 $15.99 $12.95 /each  View/Buy   Invisible Ink Large, 8 oz, bottle of invisible ink. Item No: PL353 $39.99 $29.95 /each  View/Buy   Mini UV FlashLight This handy high quality UV mini light is great for detection of counterfeit bills, credit cards and many other applications where black light is used such as your next glow-in-the-dark party! Item No: PL165 $12.99 $7.95 /each  View/Buy
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