Consider Chromic Chloride And Chlorophyll

Consider Chromic Chloride and Chlorophyll

So in the most recent 650K stream it was sort of confirmed that Test Tube is fluorescein. Now to the uninitiated, when you look up fluorescein you get images like this:

So of course it makes sense that people think that this makes sense, she is ALSO a bright green color right? So it fits perfectly. However there's some issues.

For one, fluorescein only glows this brightly under UV light. Under normal inside lighting it looks more like this:

And under sunlight more like this:

While under the sun it does look quite green, it's still pretty yellow, no? And I wouldn't assume that her inside lighting perfectly matches the sun.

And Test Tube isn't "mostly yellow with green glow"! She isn't Mtn Dew, she is more like the pure green on a computer screen or something (at least in her second season):

So what else could she be? For a second I will be ignoring the weird staining properties her liquid has an focusing solely on color. (Though to be fair to the team, Fluorescein stains literally anything and everything)

Initially I thought of salt solutions, since that was what first came to mind when I thought of naturally green liquids, and I found my contender there. Introducing Chromic Chloride!

I feel like that's pretty dang close to her green, no? Furthermore, it's not bright green under UV, that's just how Chromic Chloride looks like. To me, the second to last vial looks the closest (and a good argument could be made that the third to last vial also looks like her third season appearance)

And then I discovered chlorophyll:

Look at that color. That is literally Test Tube right there. Now, most chlorophyll looks muddy because all the other plant stuff hasn't been filtered out, but pure chlorophyll like this is a really pure, really Test Tube-y green color.

I think Chlorophyll is the best candidate for a Test Tube color (and it's pretty good at staining stuff, even if it's not the ungodly stain that fluorescein is).

Oh, and fun fact, Chlorophyll fluoresces bright red under UV!