Making a radiation sign with fluorescein

Making fluorescein: https://youtu.be/xXZcRwh28TE

Check out my main channel: https://www.youtube.com/c/NileRed

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.

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Nile talks about lab safety: https://youtu.be/ftACSEJ6DZA​

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Видео Making a radiation sign with fluorescein канала NileRed Shorts