I wouldn't worry about or account for possible purity unless someone has done an acetone wash or some other method of determining it. The "84% max purity" meme is based on a misunderstanding and doesn't matter in the real world.
I managed to track down a report that went into more detail about the "spacey feeling".
So the "spacey feeling" certainly seems to be linked to lower dosages and possibly tolerance.
She knows, she’s referring to an actual lab analysis she got done which stated a particular batch Indigo is in possession of was 80% pure. Which honestly I’m doubtful as it seems to exact of a number for my tastes when we know these labs aren’t as on point as we’d hope..
In regards to the spacey feeling, yea that is a low dose thing that doesn’t quite hit the mark and you kind of out of it but not really rolling good either. I’ve experienced it at low doses (5-40mg) when I played around with them a few times.
-GC