How to test SN purity

[Rudeus_Greyrat]

Hi everyone. I'm trying to setup my CTB in a few months from now, maybe around December if not earlier.
My main concern after buying SN from DMC it's the purity. I don't trust bringing it to a lab, but I've seen that stripes can be faulty. I'm confused and I don't know how to solve this issue. Also, I wouldn't know where to keep SN after taking it out of the vacuum bag in which it arrives.
I've seen posts about DMC quality contradicting each other, so that scared me quite a bit, because I don't want to fail.
Also, even if I read the guides with SN, I'd like to ask again: is there any risk of failure? Permanent damage from surviving? Could someone who assisted someone else, or plans to do the same, reach me in the comments or by PM, to talk and enlighten me on some matters?

 

[Rudeus_Greyrat]

Bump?

 

[Agon321]

This thread has information on how to test SN:

SN Bible Sodium Nitrite Method (Comprehensive Guide SN Method)

Sodium Nitrite (SN) Method Introduction This document is a compilation of different sn information, members inputs, important posts related to sn, recorded suicide cases related to sn, different research on sn and so on. This document also give a full understanding of SN, what it is, how it...

sanctioned-suicide.net

To answer your second question.
The risk of failure is always there.
However, for example, the risk of brain damage is relatively low. I don't know if there is any confirmed case of someone having brain damage after a failed CTB.

But I remember there were cases of people who had some problems, but now I have a hard time finding threads that describe it.
One person, if I remember correctly, had trouble urinating, or something like that.

Overall, the risk of serious consequences is probably relatively low compared to some other methods, but the risk is always there and everyone needs to remember that. Playing with death is potentially dangerous.