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Disappearing Ink with a CO2 Blast

How to turn ordinary disappearing ink into something way more fun.


It's a joke shop classic... disappearing ink. There's just something funny about squirting dark blue "ink" on someone's shirt only to have it disappear like magic. Best of all, there's actually some great acid-base chemistry behind all of the prankster fun.

Thanks to Lee Marek from the Weird Science team for sharing this idea with us years ago at an NSTA convention.

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