These are my results with MARQUIS TEST:
Note:Samples 1 and 2 of DOC are from different vendors, the first is a pink powder, the second is a yellow powder more clotted.
Note:The first pic at 3 mins is not very clear but all were similar shades of dark green with some more brownish.
I had to add little amount of alcohol in sample 1, 3 and 4 because it was caked on the bottom and maybe it is probably the reason why they were brighter later.
After 30 mins the sample 2 was still very dark green.
They are four different batches from different vendors, sample 1 and 2 are similar with finely white texture but 1 is more crystalline and 2 is more dusty,sample 3 is more granural and yellow, sample 4 is white and dusty and i think it is freebase.
Note: Sample 1 and of 25C are from different vendors, both are white, sample 1 is more crystalline while sample 2 is more dusty.
After more than 40 mins, so after when i took the pic, 25D and 25B turned brighter and brownish.
Note: 4-HO-MIPT after some more time turned nearly black, not brown like the Mipt.
These are the vials with the compunds in the same order as i posted them so from left to righ:
Escaline, DOC1, DOC2, 4-HO-MET, 25I 1-2-3-4, 25c 1-2, 25B, 25D, 2C-D, 4-HO-MIPT, MIPT