Dracula's Ink Well

It turns out Dracula has a special ink he uses to write letters.  Use the ink to write a note, blow on it, and the writing disappears.  Spray it with a restorative fluid and it comes back.

Comes with complete instructions and explanation of the science behind the fun.

Demo Pack includes:  1 oz thymolphthalein, 1 oz sodium hydroxide, 1 paint brush, 1 pipette

Study Group Pack includes:  4 1-oz thymolphthalein, 4 1-oz sodium hydroxide, 4 paint brushes, 4 pipettes

Classroom Pack includes:  10 1-oz thymolphthalein, 10 1-oz sodium hydroxide, 10 paint brushes, 10 pipettes

School Pack includes:  32 oz thymolphthalein, 32 oz sodium hydroxide, 30 paint brushes, 30 pipettes