Bloody Fingers

Pour a small sample of "ghost blood" on a small sponge, roll the tip of your index finger in the clear liquid, and then apply it to a sheet of goldenrod paper. A blood-red fingerprint appears! Apply the same liquid to magenta paper, and produce a whitish, ghost-like fingerprint.

Demo Pack includes:  1 oz 2% sodium hydroxide, 2 2"x5" goldenrod papers, 2 2"x5" magenta papers,  1" sponge    

Study Group Pack includes:  4 1-oz 2% sodium hydroxide, 8 2"x5" goldenrod papers, 8 2"x5" magenta papers, 4 1" sponges    

Classroom Pack includes:  10 1-oz 2% sodium hydroxide, 32 2"x5" goldenrod papers, 32 2"x5" magenta papers, 10 1" sponges    

School Pack includes:  10 1-oz 2% sodium hydroxide,  32 oz sodium hydroxide, 128 2"x5" goldenrod papers, 128 2"x5" magenta papers, 128 1" sponges   

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