Method Exit bag and inert gas megathread

[Tears in Rain]

Yeah, I got this one now:
View attachment 129527

I'm using Helium, so I have to triple the Argon readings (thanks Tears in Rain!) - it seems to work well now.
But I'd still like a way to check if the flow-rate is accurate. View attachment 129529

There are helium flowmeters available in U.S. and U.K.

One I came across has markings(standard cubic foot per hour(SCFH) for argon, helium, and CO2. The argon markings go from 5 at the bottom to 50 at the top. Helium goes from 20 at the bottom to 150 at the top.

So, even though the bottom markings may not be directly across from each other, the top helium marking (150) is 3 times the top argon marking(50).
So, like I said previously, 5lpm on argon flowmeter is probably 15lpm(3x argon) helium.

If you're worried, for peace of mind maybe you should get a helium one.

 

[ClownWorld2023]

The regulator is built in the tube itself, 0.5-50 bar. Another user have the exact setup I think, but I'm pretty sure he CTB since he said he would do it the same day he posted.

My flow meter
View attachment 129512

The similar setup

View attachment 129514

That cylinder has the pressure regulator built-in.
Does it only show the pressure?

Have you been able to connect the flowmeter?

What happens if you set the pressure to 1 bar? What does the flowmeter show?

Yeah, I got this one now:
View attachment 129527

I'm using Helium, so I have to triple the Argon readings (thanks Tears in Rain!) - it seems to work well now.
But I'd still like a way to check if the flow-rate is accurate. View attachment 129529

I don't know of any way besides maybe connecting a standalone helium flowmeter to the regulator outlet.

 

[Elzar]

There are helium flowmeters available in U.S. and U.K.

One I came across has markings(standard cubic foot per hour(SCFH) for argon, helium, and CO2. The argon markings go from 5 at the bottom to 50 at the top. Helium goes from 20 at the bottom to 150 at the top.

So, even though the bottom markings may not be directly across from each other, the top helium marking (150) is 3 times the top argon marking(50).
So, like I said previously, 5lpm on argon flowmeter is probably 15lpm(3x argon) helium.

If you're worried, for peace of mind maybe you should get a helium one.

Thank you.
Those don't have the 21x8 connection I think.
But yeah, I'm relatively certain that x3 is about right.
Would be interesting to know If the conversion rate is completely linear.
That's something that could be a bit of a problem I guess.
Anyway, I just filled a 20 liter bag with a 5 lpm flowrate on the Argon scale (which, then, should be around 15 lpm for Helium) in about 50 seconds.
I don't know exactly what the liter measurement on a freezer bag refers to, of course - when you seal it by hand, you actually lose some surface area... Assuming that's the case and the effective filling volume is indeed slightly smaller as a result, then the 50 seconds might not be that far off?

Edit:
Nah, I think the filling volume refers to volume you can get into a bag and actually still seal it (at least that's what ChatGPT says).
So that would mean, that I filled 20 liters in 50 seconds time - which would be 24 lpm.
Maybe you're on to something here and at low lpm the conversion rate is closer to x4 (if my math above is correct,which it likely isn't, it would be close to x5).
Oh dear, the complications!^^

 

[Kapsyl]

I have a screenshot which mentions how fast it should fill up, not sure how accurate but maybe will help point you in right direction.

 

[Elzar]

I have a screenshot which mentions how fast it should fill up, not sure how accurate but maybe will help point you in right direction.

View attachment 129545

What balloon is this referring to?

Even the PPeH is confusing in that regard.
Both, the german and the english version speak of a 35x50 Exit Bag and 15 lpm of gas - but the german version says the bag should fill up in one minute, while the english one speaks of two.

I don't know of any way besides maybe connecting a standalone helium flowmeter to the regulator outlet

I haven't really found anything like that (for the german market at least) - even GD-shop told me to just use an Argon meter and convert. Didn't get into any details as to how...

 

[thegoldengirls]

@Tears in Rain
I have a question for you or anyone else that may answer.
Originally, I ordered a disposable cylinder Nitrogen (99.999% Pure) 550 liter cylinder from a particular company.
However, I feel I may have to abort using this particular cylinder I ordered because I have a feeling they maybe stringing me along to not ship. Now the weekend is here, so there will be an even longer delay.

I'm so frustrated with them, I really want to just call them to ask for a refund and tell them they will just lose my business if they do not want to ship it to me.

On the other hand, I've since found a local beer Brewery company, they claim that their Nitrogen is 100%. They even go on to state it is not beer gas, and place emphasis on it being 100% which is great reassurance considering what we really need these things for. I know they're are different types of Nitrogen, but they only say it's %100.
The issue is that their biggest tanks are 40 Cubic Feet and probably involves a rental fee.

Will using Nitrogen of this small capacity be too risky?
I've read a post from that very nice poster Tiredhorse that used to be here on this forum, and he mentioned that that a 40 cubic feet is about the smallest that should be used. What are your thoughts on this?

 

[Tears in Rain]

@Tears in Rain
I have a question for you or anyone else that may answer.
Originally, I ordered a disposable cylinder Nitrogen (99.999% Pure) 550 liter cylinder from a particular company.
However, I feel I may have to abort using this particular cylinder I ordered because I have a feeling they maybe stringing me along to not ship. Now the weekend is here, so there will be an even longer delay.
View attachment 129550
I'm so frustrated with them, I really want to just call them to ask for a refund because these methods are draining my pockets.

Why would they string you along if they're making money off you? Do you think they're suspicious about why you want it, after the phone call you had with them?

On the other hand, I've since found a local beer Brewery company, they claim that their Nitrogen is 100%. They even go on to state it is not beer gas, and place emphasis on it being 100%.
The issue is that their biggest tanks are 40 Cubic Feet and probably involves a rental fee.
View attachment 129549
Will using Nitrogen of this small capacity be too risky?
I've read a post from tiredhorse, and he mentioned that that a 40 cubic feet is about the smallest that should be used. What are your thoughts on this?

40cu/ft = 1132 litres of compressed gas, so loads. If you set the regulator to 15lpm for Nitrogen, that gives roughly 75 mins of gas; you'll be long gone by the time that tank is finished!

Yeah, the rental thing is hassle. A lot of places worldwide only do rental, and some companies maybe charge a yearly rental fee if the cylinder isn't returned. But you'll be gone and your bank accounts closed, so it won't matter.
It says 'does not ship', are you good to collect?

You seem in a rush from what you posted previously, are you planning to ctb soon, if that's not too personal a question to ask?

Even the PPeH is confusing in that regard.
Both, the german and the english version speak of a 35x50 Exit Bag and 15 lpm of gas - but the german version says the bag should fill up in one minute, while the english one speaks of two.

Why are you so concerned about how long it takes for the bag to fill?
The last 5 acts has this recommendation for the bag:

 

[Elzar]

Why are you so concerned about how long it takes for the bag to fill?

Mostly because it would be a pretty good indicator if the flow-rate is correct.
Especially because the PPeH does recommend a size. You'd think that size would relate to the time they tell you to expect the bag to fill up.

 

[thegoldengirls]

Why would they string you along if they're making money off you? Do you think they're suspicious about why you want it, after the phone call you had with them?


40cu/ft = 1132 litres of compressed gas, so loads. If you set the regulator to 15lpm for Nitrogen, that gives roughly 75 mins of gas; you'll be long gone by the time that tank is finished!

Yeah, the rental thing is hassle. A lot of places worldwide only do rental, and some companies maybe charge a yearly rental fee if the cylinder isn't returned. But you'll be gone and your bank accounts closed, so it won't matter.
It says 'does not ship', are you good to collect?

You seem in a rush from what you posted previously, are you planning to ctb soon, if that's not too personal a question to ask?

I'll admit, my mental health is not the best because I'm having a very bad depressive episode. So, that maybe the reason why I'm not thinking logically and have become illogical and paranoid with thinking they won't ship.
I'm sure they would have just refunded me if they had hesitation on shipping me the Nitrogen.

On the other hand, If I do encounter an issue with company number one, it's very reassuring to know that company number two is an option.
I may just give myself by Thursday to decide what I'm going to do, and go with company 2 if I don't get my order from company 1 by then.

There is no deadline in particular for me to ctb, but I was hoping to do it this upcoming week. It's perfect timing because I have 3 days straight off from work, and my sibling will be out of the country.
We do not live together, but her being preoccupied with her travels will take any attention off of me.

These two different situations makes for perfect timing to ctb as no one will be too concerned to do a welfare check, and I'll be long gone by the time they do.

And no, that's not too personal to ask.
I'm just eager to finally have a peace of mind for once in my life by ctb. Depressive Intrusive thoughts has been running amok in my mind. An abrupt breakup of a friendship I valued immensely triggered these feelings. But I've always wanted to ctb on and off throughout the past several years. It would be nice to join my dear departed mom.
How about yourself? Do you have any plans to ctb in the future or are you here for the comradery this forum provides?

 

[Tears in Rain]

I'll admit, my mental health is not the best because I'm having a very bad depressive episode. So, that maybe the reason why I'm not thinking logically and have become illogical and paranoid with thinking they won't ship.
I'm sure they would have just refunded me if they had hesitation on shipping me the Nitrogen.

On the other hand, If I do encounter an issue with company number one, it's very reassuring to know that company number two is an option.
I may just give myself by Thursday to decide what I'm going to do, and go with company 2 if I don't get my order from company 1 by then.

There is no deadline in particular for me to ctb, but I was hoping to do it this upcoming week. It's perfect timing because I have 3 days straight off from work, and my sibling will be out of the country.
We do not live together, but her being preoccupied with her travels will take any attention off of me.

These two different situations makes for perfect timing to ctb as no one will be too concerned to do a welfare check, and I'll be long gone by the time they do.

And no, that's not too personal to ask.
I'm just eager to finally have a peace of mind for once in my life by ctb. Depressive Intrusive thoughts has been running amok in my mind. An abrupt breakup of a friendship I valued immensely triggered these feelings. But I've always wanted to ctb on and off throughout the past several years. It would be nice to join my dear departed mom.
How about yourself? Do you have any plans to ctb in the future or are you here for the comradery this forum provides?

Sorry about your situation.

Yeah, having gone back over your previous post, you did say the lady was asking a lot of questions about having a business address, etc. Maybe give it until the 5 business days from that call to see if it arrives.

But if getting the other cylinder fits in with the perfect timeframe that you originally planned, then I guess it's worth considering the alternative.

Me, I attempted once a few months back with a hood and nitrogen, but S.I. got the better of me. Due to other things happening in my life I put off another attempt. But I don't see my overall situation changing, so I don't know how long I'll put it off.

For now I guess I'm just passing time here, and passing on any info I acquired from others previously on this thread. Not sure how much longer I'll stick around.

 

[bcl001]

Hi team! Exploring inert gas as an option after failed hanging attempts.

Is there a definitive guide around nitrogen purity requirements? I have access to >99% pure however there seems to be info floating around that this might not be sufficient? Does the extra 0.xx% make a material difference?

The source is direct from the PPEH for my country. Fact sheet contains the following:

Ingredient: NITROGEN
CAS Number: 7727-37-9
EC Number: 231-783-9
Content: >99%

There are no additional ingredients present which, within the current knowledge of the supplier and in the
concentrations applicable, are classified as hazardous to health or the environment
and hence require reporting in this section.

 

[Tears in Rain]

Hi team! Exploring inert gas as an option after failed hanging attempts.

Is there a definitive guide around nitrogen purity requirements? I have access to >99% pure however there seems to be info floating around that this might not be sufficient? Does the extra 0.xx% make a material difference?

The source is direct from the PPEH for my country. Fact sheet contains the following:

Ingredient: NITROGEN
CAS Number: 7727-37-9
EC Number: 231-783-9
Content: >99%

There are no additional ingredients present which, within the current knowledge of the supplier and in the
concentrations applicable, are classified as hazardous to health or the environment
and hence require reporting in this section.

The PPeH, The Last Five Acts, and @Intoxicated all say a purity of 98% and higher is fine.

Can you elaborate the need for such a high purity? I don't see reasons why 98 - 98.5% Ar wouldn't work well enough.

98% Ar + 2% N2 should be okay, because N2 is just another inert gas.
98% Ar + 2% O2 should be okay, because concentrations of O2 below 6% are lethal and cause fainting quickly. [1]
98.5% Ar + 1.5% CO2 can be slightly worse but still okay, because concentrations of CO2 at 15000 - 20000 ppm cause mild effects during short periods of time [2], and you can hyperventilate to negate these effects.

[1]

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6474450/

NIOSH Publication No. 2005-100 Respirator Selection Logic 2004 Chapter V. Additional Information on Hazards and Exposures

The purpose of this Respirator Selection Logic (RSL) is to provide guidance to respirator program administrators on respirator selection that incorporates the changes necessitated by the revisions to the respirator use and certification regulations and...

niosh.dnacih.com

[2]

https://onlinelibrary.wiley.com/doi/10.1111/ina.12939

https://www.fsis.usda.gov/sites/default/files/media_file/2020-08/Carbon-Dioxide.pdf

 

[bcl001]

The PPeH, The Last Five Acts, and @Intoxicated all say a purity of 98% and higher is fine.
View attachment 129594

View attachment 129595

Thanks mate, clear, concise and much appreciated!

May I ask which version of the PPEH you're referring too? I can't see any mention of purity in the version I'm looking at which makes me wonder what else I'm missing

 

[Tears in Rain]

Thanks mate, clear, concise and much appreciated!

May I ask which version of the PPEH you're referring too? I can't see any mention of purity in the version I'm looking at which makes me wonder what else I'm missing

The 2022 one.

The Peaceful Pill Handbook 2022 (Free PDF Download) : Philip Nitschke : Free Download, Borrow, and Streaming : Internet Archive

The Peaceful Pill Handbook book series provides research and information on voluntary euthanasia and assisted dying for the elderly, those who are seriously...

archive.org

 

[Justnotme]

I have a question. Let's say I have a nitrogen regulator. The right circle as well as the left circle show measurements in mpa (megapascals). That is, one circle shows the pressure under which the nitrogen is in the cylinder, and the second circle shows the outlet pressure (that is, the one I want to set)

Can I not use a rotameter, but use a balloon to see how many seconds it takes to inflate?

That is, I will set a certain value in megapascals on the second circle and thus I will find out whether this value specified in megapascals is suitable by inflating a balloon

Is this a good idea?

 

[bcl001]

Purchased a nitrogen cylinder today. Very easy to do. Slight issue with purchasing a regulator however. It seems Nitrogen bottle attachment (Type50) is a different fitting to argon canisters which means, if you're Australian as I am, you may have to chase down a nitrogen regulator from an online store. Non nitrogen regulators, in Aus at least, won't work as advised in the PPEH (and creating adaptors was not recommended by the bloke behind the counter). That said I found a specific nitrogen regulator with a max flow rate of 25L/min which looks to be sufficient elsewhere (although there weren't many to be found at a reasonable price).

Explored EEDB masks, et.al but finding one under $300 aud proved difficult so going with a home made exit bag.

Just waiting for the regulator to arrive and I'm good to go

 

[outrider567]

Hi team! Exploring inert gas as an option after failed hanging attempts.

Is there a definitive guide around nitrogen purity requirements? I have access to >99% pure however there seems to be info floating around that this might not be sufficient? Does the extra 0.xx% make a material difference?

The source is direct from the PPEH for my country. Fact sheet contains the following:

Ingredient: NITROGEN
CAS Number: 7727-37-9
EC Number: 231-783-9
Content: >99%

There are no additional ingredients present which, within the current knowledge of the supplier and in the
concentrations applicable, are classified as hazardous to health or the environment
and hence require reporting in this section.

99.0% Nitrogen is perfectly acceptable to successfully CTB as per Greenberg and a website called Quora

 

[Tears in Rain]

Some people elsewhere were wondering if there were clear step-by-step instructions in making an exit bag. There were videos linked here before, like Betty's how-to video, and Chi's video, that show how to make the exit bag using elastic chord and a toggle.
Also a linked PPeH Exit bag pdf.

The latest editions of Final Exit by Derek Humphry only mention using a sports headband/sweatband around the exit bag neck.



It may be an easier method than using an elastic.
Here how the headband method was done in The Last Five Acts:





There's another good step-by-step video on creating the exit bag via elastic and toggle, that I haven't seen linked her before. It also shows how to tape the tubing to the bag. The video uses two helium cannisters without a regulator, which many people used in the past. I personally would use a gas regulator.

Dignified Helium Exit video

 

[Tears in Rain]

Explored EEDB masks, et.al but finding one under $300 aud proved difficult so going with a home made exit bag.

If you really want a cheap EEBD/ELSA hood, then Google search "EEBD hood spare parts". It should bring up some Chinese vendors, where you can get them relatively cheap. With just a hose attached to the hood(no air cylinder).
But an exit bag is fine to use.

 

[Tears in Rain]

There's another good step-by-step video on creating the exit bag via elastic and toggle, that I haven't seen linked her before. It also shows how to tape the tubing to the bag. The video uses two helium cannisters without a regulator, which many people used in the past. I personally would use a gas regulator.

Dignified Helium Exit video

Here's the Veoh version of the above-mentioned video. You don't have to set up an account to view the video on the Veoh site, like you do with Vimeo.

Step-by-step helium method video
(no regulator used).

 

[withouthope]

If money is not a concern what setup is the most foolproof way to use this method?

 

[Kapsyl]

If money is not a concern what setup is the most foolproof way to use this method?

Realistically Scba or Scuba

Or those pods they use in Switzerland, either building one or traveling there. But if you have that amount there are even better methods I guess.

 

[thegoldengirls]

The status of my Nitrogen finally changed to "shipped" this morning.

Now, I ordered an argon/CO2 regulator and received that already. I couldn't find a Nitrogen regulator with the flowmeter which is why I went with this one.

I'm not even sure if it's going to be compatible with the Nitrogen tank. Is there anything I'm missing? I know I'll need a wrench. Thus far, I have the:
Turkey Bag, elastic bands, cord stops, ear plugs(preference) , pulse oximeter.

Should I order another brand regulator just in case the regulator uptop isn't compatible?

I've been sifting through the summer threads with Gasmonkey's input. And I must say, the amount of information is quite overwhelming. When they talk about Scubgear, adapters, my head starts spinning because I wonder if I will be put together everything properly.
But I am still forever grateful for this website and do plan on deleting when I do everything.

 

[Tears in Rain]

The status of my Nitrogen finally changed to "shipped" this morning.

Now, I ordered an argon/CO2 regulator and received that already. I couldn't find a Nitrogen regulator with the flowmeter which is why I went with this one.
View attachment 129949
I'm not even sure if it's going to be compatible with the Nitrogen tank.

That argon regulator is fine to use with a Nitrogen cylinder, the cylinder connection is the same for both in the U.S.

That one measures cubic foot per hour(SCFH), so you just need to convert to litres per minute(just use an online converter).
1 cubic foot / hour = 0.472 litre / minute
so 32cfh gives 15lpm.

Also, because argon weighs different to Nitrogen, you'll have to convert argon litres per minute ( LPM) readings on the regulator to Nitrogen LPM. 12lpm on an argon regulator gives about 15lpm flow of nitrogen; 15lpm on an argon regulator gives about 18 LPM nitrogen.

Is there anything I'm missing? I know I'll need a wrench. Thus far, I have the:
Turkey Bag, elastic bands, cord stops, ear plugs(preference) , pulse oximeter.

Are you going to use oxygen/vinyl tubing, or the hose that comes with that regulator in your pic?

I've been sifting through the summer threads with Gasmonkey's input. And I must say, the amount of information is quite overwhelming. When they talk about Scubgear, adapters, my head starts spinning because I wonder if I will be put together everything properly.
But I am still forever grateful for this website and do plan on deleting when I do everything.

Ignore the stuff about adapters etc, that's for SCUBA/SCBA gear. You don't need any adapters for exit bag set-up

 

[thegoldengirls]

That argon regulator is fine to use with a Nitrogen cylinder, the cylinder connection is the same for both in the U.S.

That one measures cubic foot per hour(SCFH), so you just need to convert to litres per minute(just use an online converter).
1 cubic foot / hour = 0.472 litre / minute
so 32cfh gives 15lpm.

Also, because argon weighs different to Nitrogen, you'll have to convert argon litres per minute ( LPM) readings on the regulator to Nitrogen LPM. 12lpm on an argon regulator gives about 15lpm flow of nitrogen; 15lpm on an argon regulator gives about 18 LPM nitrogen.



Are you going to use oxygen/vinyl tubing, or the hose that comes with that regulator in your pic?


Ignore the stuff about adapters etc, that's for SCUBA/SCBA gear. You don't need any adapters for exit bag set-up

Thanks. Yes I'm going to use the tube the regulator comes with. The length should be perfect. I just hope to overcome SI. I'm starting to think having the pulse ox on is a bad idea.

In the past, when I tested my exit bag with Helium, seeing my oxygen drop rapidly is what caused me to panic, hence, SI kicking in and me pulling the bag off.
I might omit using the pulse oximeter this time around unless I'm practicing.
I just wish it could be as easy as when one goes into surgery.
I had a procedure last year, the anesthesiologist just had me take a few deep breaths, and next thing I know I was awake in recovery. I had no recollection of the feeling of passing out from the anesthesia.
I just remember while he had the mask placed over my face being nervous that the anesthesia wasn't going to work with me, because he kept saying take a deep breath, but after 5 breaths I was out.
I will try to see me ctb as that day I had the anesthesia. Just breathe when that bag is placed.
I notice with old responses, the some of common experience is that people notice a change in their vision suddenly while have the bag over their head. I think if that happens to me, I might freak out because I'd be nervous that I'm going blind instead of ctb successfully.
But I have to understand that if I want to do this correctly, I have to patient until I'm unconscious.

 

[bcl001]

Is there general guidance anywhere regarding connections and o-rings? My regulator came with 3 o-rings but no instruction on where they might go. I've got a feeling it might be one of those "so obvious if you're a welder you don't need instruction" kind of situations. Completing some testing at 15l/pm the bag takes over 2 minutes to fill and I've gone from 15000 kpa to 8000kpm over maybe 10 minutes (from a 1600L tank) which leads me to believe I've fucked up somewhere.

Unrelated but also. To attempt to test the setup I've removed the bag from the situation, held the pipe in my mouth and breathed through that. My O2 levels tank to around 60 relatively quickly (maybe 30 seconds) then floats between 60 and 80. I have a light feeling all throughout my body, and am covered in sweat but I don't seem to pass out. Even after 3 minutes. Is there any reason for this? I've wasted so much nitrogen that I'll need to refill the tank so happy to test this setup with what I've got left to ensure I've got it right. Nitrogen supplier say it's 99.9% pure

 

[Tears in Rain]

Is there general guidance anywhere regarding connections and o-rings? My regulator came with 3 o-rings but no instruction on where they might go. I've got a feeling it might be one of those "so obvious if you're a welder you don't need instruction" kind of situations.

Some gas regulators have an O-ring on the end of the connection that goes into the cylinder:

Completing some testing at 15l/pm the bag takes over 2 minutes to fill and I've gone from 15000 kpa to 8000kpm over maybe 10 minutes (from a 1600L tank) which leads me to believe I've fucked up somewhere.

Maybe check for leaks, like the guy did in this video (leak test starts at 1m 25sec):

Unrelated but also. To attempt to test the setup I've removed the bag from the situation, held the pipe in my mouth and breathed through that. My O2 levels tank to around 60 relatively quickly (maybe 30 seconds) then floats between 60 and 80. I have a light feeling all throughout my body, and am covered in sweat but I don't seem to pass out. Even after 3 minutes. Is there any reason for this? I've wasted so much nitrogen that I'll need to refill the tank so happy to test this setup with what I've got left to ensure I've got it right. Nitrogen supplier say it's 99.9% pure

Were you still breathing air in through your nose?

Some tried a blackout test by wearing the exit bag, but it's risky. You would probably need to leave the tubing untaped, so it falls away when you go unconscious. But the setup would need to ensure it falls away from the bag.

Example of someone doing blackout test:

So I've attempted the blackout test.

• 2.8 Nitrogen
• Bag Diameter. 60 x 40 cm / 20 liters / 45 micron
• 3mm elastic cord

Inflation takes some time, if you feel the gas flow tingling your ears you need to tighten the bag more on your
forehead. Bag inflated like in ppeh pictures, however you need to keep the constant flow running.
If you turn the gas flow down gas will deplete very fast from the bag.
The bag was done the same as the doing it with chi video.
I did not hyperventilate.

This shit was wild, pulled the bag down, took a few breaths. Pulse oxymeter started pinging like crazy.
After that i just remember wild noises, hard to describe but a bit like experimental electronic music.
I think i only regained consciousness because I headbutted the cabinet in front of me.
Cylinder knocked over, pulse oxymeter lying on the floor, head bloody.

I have no recollection how long it took.

I did blackout tests with both exit bag and scba and you will be unconscious really fucking fast. It's like somebody else is switching the lights off for you.

I thought you where talking about intervention from a third party. I did a blackout test with my gear and fell into a cabinet because I was sitting and that's the reason I still can write here. If you do this in your bed or fixated to a chair when you unconscious you are gone.

Some say there's no need to do a blackout test:

There is no need to do any blackout tests as long as you test the purity of the gas or buy the cylinder from an extremely reputable supplier that provides a certificate of purity.

If you want to do a blackout test you can use a SCUBA setup with a negative pressure demand valve (when you faint the mask will fall and air respiration will be restored) or fill a Mylar Balloon and inhale from it.​

Maybe buy an oxygen mask just for testing, like @ClownWorld2023 planned to do:

I'm considering using a oxygen mask like this for the blackout test.

I tried getting a blackout using an EEBD hood and holding breath after breathing in nitrogen, but this isn't going to work.
I noticed shortness of breath happened faster and I had to breathe more often. Also had vision going dark a bit and some lightheadedness, but no obvious signs that I was going to blackout.
So this is too risky.

I'm considering a setup with a mask, and holding the mask against my face while there is tension on the hose so the mask snaps back after I blackout.

 

[bcl001]

Some gas regulators have an O-ring on the end of the connection that goes into the cylinder:



Maybe check for leaks, like the guy did in this video (leak test starts at 1m 25sec):




Were you still breathing air in through your nose?

Some tried a blackout test by wearing the exit bag, but it's risky. You would probably need to leave the tubing untaped, so it falls away when you go unconscious. But the setup would need to ensure it falls away from the bag.

Example of someone doing blackout test:




Some say there's no need to do a blackout test:



Maybe buy an oxygen mask just for testing, like @ClownWorld2023 planned to do:

You're absolutely invaluable to this thread mate, thanks again.

To the best of my knowledge I wasn't breathing outside the tube but I'll admit the test a pretty average one so I couldn't guarantee it. I'll take a look at what you've posted and see what I can achieve with the remainder of my tank

 

[Tears in Rain]

You're absolutely invaluable to this thread mate, thanks again.

To the best of my knowledge I wasn't breathing outside the tube but I'll admit the test a pretty average one so I couldn't guarantee it. I'll take a look at what you've posted and see what I can achieve with the remainder of my tank

No problem.

If you have the money, you could also test the purity of the gas, like @GasMonkey mentioned in the post I linked above:

 

[thegoldengirls]

My Nitrogen had a delivery time with UPS at 7 p.m. yesterday.
I made the proper arrangements to do all errands earlier in the day, and what do you know?
In the late morning, while I'm out I see the status changed to "missed delivery ". I didn't even get a notification that they arrived.
Now, I have to wait until Monday.
They gave me the option to pick it up from their facility, but I'm nervous that If I do pick up, they won't release it to me. So, that's out of the question.
When I ordered the cylinder, I was forced to give a fake business name, a different floor, along with my actual name.
So, the only thing that's actually accurate is the street address along with my name.
I just hope the delivery driver doesn't give me a hard time when they sees that I'm not an actual business.
I also updated to just leave it outside too.
If i encounter the driver, and he's/she's resistant to give it to me , I'll have a generous tip ready. There is so many obstacles to ctb, it can be frustrating at times. I see why people take drastic measures to ctb now.