It’s one of the adsorbents everyone here is using for the crc tek. It’s a type of bentonite clay used for bleaching food oils among other things.
I’ve seen the following used for crc: t5, t41, silica, activated alumina I think, and maybe a couple others I can’t recall right now.
If you’re interested, I would strongly recommend reading the thread. It’s crazy long, but has so much information.
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