I'm trying to understand what they wanted to say with vacuum? is it a verb here? Also I don't understand filtered off.. thanks for helping
I let this mixer stir for several minutes. The molecular sieves and the activated charcoal were then vacuum filtered off. And here we are left with a nice colorless solution.
"vacuum filtered off" means "removed using a vacuum filter / using vacuum filtration". It would be easier to read if it was hyphenated: "vacuum-filtered off". org/wiki/Suction_filtration .
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"vacuum filtered off" means "removed using a vacuum filter / using vacuum filtration". It would be easier to read if it was hyphenated: "vacuum-filtered off". I am not 100% sure what a "vacuum filter" is, but it may be the apparatus described at https://en.wikipedia.org/wiki/Suction_filtration .