labphoto:

My new favorite: fluorescent crystals at the side of a test tube. 

Something new was made what crystallized on standing. Previously I could only make this compound as a powder and I was unable to grow crystals from it, since it’s nearly insoluble in everything, but now, with a little trick these nice crystals formed what are highly fluorescent and look great.  

The bottom picture is cropped from the upper photo. 

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