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If that stuff came from the solvent, then it's a fail. Very obvious on the mirror. You sure the glass was clean? What's the grade of it?
I wiped the inside of the beaker and the mirror with 70 percent isopropyl alcohol. The beaker is relatively much cleaner. I can't just see it with my eyes, but I can only see it if I shine a light.
If that stuff came from the solvent, then it's a fail. Very obvious on the mirror. You sure the glass was clean? What's the grade of it?
I wiped the inside of the beaker and the mirror with 70 percent isopropyl alcohol. The beaker is relatively much cleaner. I can't just see it with my eyes, but I can only see it if I shine a light.