Making a radiation sign with fluorescein @NileRed

Making a radiation sign with fluorescein @NileRed

Uploaded May 2021 | Updated September 2026, 2 weeks ago

Fluorescein is a really strong yellow dye that's commonly used to make highlighters. To make an ink out of it, I just have to add a small amount of it to water.

#shorts

Making a radiation sign with fluorescein

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Making a radiation sign with fluorescein