@Right2DiePainFree, I will explain and answer your questions from this post.
https://sanctioned-suicide.net/thre...oes-that-not-matter.77482/page-2#post-1402548
Air respirator masks
Air respirator masks do not work. With some tricks one can have an almost perfect seal before unconsciousness but not after unconsciousness and body movements, change of face muscles. A reservoir bag is an extra component and has its own possibilities of problems. I have tested it.
High premium diver masks als also designed to keep people alive for some time, when they are unconsciousness, air respirator masks not. Also the sealing of premium diver masks due to the straps system and special silicone is so innovated, that this is the only way to resist body movements and face muscle changes. No other mask can do that.
Alternative hood option
An EEBD hood would be an option, but as I said, I have tested and investigated all of them worldwide, and it's really bad, that each and everyone has a least one little detail, which will make them not to work, like no vents in the inner mask or no airtightness of the fabric, gas flowing directly into your mouth, the force to self-made dangerous connections to the hood due to lack of adapters and so on.
I will reapeat it one more time. The 1 minute before unconsciousness is not the crucial thing but the 10 minutes after unconsciousness.
Do-it-yourself systems
Moreover, you need a system, which is as robust as possible, all connections must be fixed without any do-it-yourself. This is the best option. For the classic bag there is a do-it-yourself, you can not avoid that, and one should take care of it, because there have been found people using the exit bag with gas who have been successful, but have been found still sitting on the chair dead with the hose lying on the floor, which has been fallen out of the bag at some point, no question after CTB, but this can also happen after 3 minutes, and then one will wake up and has a brain damage.
Self-contained system
A high premium Scuba system is a self-contained, complete secured connected system. Nothing can fall on the floor, no tubing can flop of the tank, no bag can have a damage due to movements, you can even ly on the bed to have more peace to lower SI. If one has the face of "almost all faces" with that the mask works, then it can be done with the hightest probabilities of success.
Nitrogen purity
In my country the common purchase of high purity Nitrogen starts with 2.8. If you are confident to have 2.2 from a professional supplier, then you can use it.
Night-night
The night-night method is more a myth than a working method. Becoming unconsciousness does not mean, it will work up to the final end.
Combinations of different methods
When one uses SN as a cominbation to a mask, one will vomit into the mask and suffocate.
When one uses hanging as a combination to a mask, after unconsciousness the rope will destroy the mask set, this will lead to destroy the hanging set and you will wake up and probably suffocating for at least 10 minutes. Also hanging leads to more body movements.
First I was considering CO as a combination to this method, but the Nitrogen, which is not so much lighter than air, will probably due to the chimney effect of the heat also be on the floor and kill the coals.
The only combination which would work, is the Suba mask set and after the first deep breath immediately a heart shot with a .22 gun at the previously marked position on the chest. I would do that, and I mean that serious, but in my country in my situation there is no way to get a gun.
But with the perfect set no one needs a combination, because in almost all cases one method is impeding the other.
Dignitas
It can happen, you have to wait for a year or so. Also, and I believe, this applies to all groups in Switzerland, you need someone there who can identify your corpse. If you are as alone on the world as I am, then you are holding even with this method the short end of the stick. So I gave up the Dignitas option very quick due to this problem.