Hey there,
Recently wanted to know how to best clean DMT with charcoal and @Brennendes Wasser recommended me to do a test on 100mg first, to see if there accrues any loss due to the AC absorbing some of the DMT and this is what SWIM did:

He took 100mg white clean crystal (because he wanted to know about the ability for the AC to trap DMT not the ability to purify) and dissolved it in 20ml of C5-C6 NPS. Then Swim added 100mg of Charcoal which he previously washed with NPS and dried. This was steered while boiling for a couple of minutes, then swim poured it into a funnel with a NPS soaked filer paper and flushed it with few ml of clean NPS. Then he oven dried the charcoal and the filter paper. The Filter paper lost 5mg weight and the charcoal lost 4mg (probably because of the removed H2O in the oven ).

The leftover DMT was exactly 100mg (Swim weighed the difference of the beaker)

I don't know if this works on bigger scales too, but i thought some of you might find it interesting.

It sounds good

Ah thats cool!

So it does not stick to the surface obviously and then maybe it could be used somewhere in the future to get rid of other contaminants?

Mostly this yellowish stuff may be either a residue of the aqueous-phase-molecules, partially soluble in Naphtha or polymerized DMT that grants coloration.

And these Carbon surfaces are normally good adsorbents, but maybe the strength increases with molecule size of the adsorptiv (DMT or contaminant) and polymerized DMT may have stronger interaction. Could be a cool way to get to white crystals, as I have oberserved: If the DMT-batch is already re-x-ed and still yellow, then no regular re-x can help getting to fully white crystals ...