I think I may have received the SN mentioned in these posts.
I managed to do the blood test, and it turned brown pretty quick. Unfortunately, I've come across a thread where somebody failed the 1st time using this particular brand of SN.
https://sanctioned-suicide.net/threads/i-failed-sn-and-i-dont-even-know-why.65468/
I did browse the persons posts for a bit, and came across a post where they thought they may have only taken 2.5g instead of 25g.
https://sanctioned-suicide.net/threads/lethal-dose-dose-of-sn.70228/post-1281681
2g is apparently a lethal dose in itself, but it's recommended to take 25g to help speed things up a bit.