New to short path need some help

[Soxhlet]

Currently running my first spd. Questions as I go

So as it says I’m running my first spd. As of this moment, my mantle reads 168. I have what I believe are the heads dripping out nicely. Starting to smell sulfur. My first question is I have visible vapors/ghosting pulling through towards my vac, and some liquid building up in my vac line going to the cold trap. What is this vapor? Also I’m pretty sure I jumped the gun on switching the flasks so I gues 2 flasks are heads, I’ll collect the main In the 3rd and shut down and save the tails in the…

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