Method Exit bag and inert gas megathread

[sm1the]

I guess the part that goes over the nose/mouth is more like a respirator.
From the photos that part looks like it is more than just a hose to a face/mouth covering.
So I assume these EEBD hood are a constant flow into the hood ?

Is the one u are referring to,a hard full face or head model?

Most EEBD are constant flow .

I found SCOTT had various EEBD models when searching for one to get.
I purposely got EEBD rather than SCBA because I wasnt sure that low force unconscious breathing would engage valve on LDV of SCBA.
(This is just my observations, I'm not sure if its correct since ppl here have used SCBA).
Positive pressure environment would be easier to breathe I think.(again,just my thoughts).
Scott makes 'Rescue hoods' as well ,which looks similar to EEBD but differ in mechanical make-up ,max flow rate etc.
Buying any of these 2nd hand are a lot cheaper ,however u will most likely receive 1 thats-
Over 10 years old(EEBD replacement period for Industry etc) .
Stiff neck seal,elastic due to age,Storage.
Exhaust valve may stick open if correct lubrication wasn't applied to spring during servicing.

I purchased used ELSA initially but then purchased brand new.

 

[devils~advocate]

It does make sense that it is constant flow, since the hood is not sealed like a mask would be.

They do appear to make an ELSA type that does use a demand valve. This is interesting.
Muster escape set

 

[PainWorseThanDeath]

Going back over all my old posts to say fuck all this.

I don't want to die, let alone with a plastic bag over my head.

The exit bag megathread cant be trusted anyway.

No way to accurately know what lpm we would get out of the regulator.

No way to know if the regulator would freeze up in process.

Contradicting info in the comments that could lead to failure, and suffering.

Its not worth it. Even if I wanted to die still, theres NO WAY im risking becoming a vegetable, or passing out and then dying suffocating ON the plastic bag because I didnt get the gas flow right.

Fuuuuuuuck that!

Nah, y'all... I'm gonna kick this bullshit court cases ass.

And if I do go to jail for some shit I didnt do, I am NOT gonna get punked. If a mfer in there wants to try and beat up on or rape me... they're gonna have to fight me to the death.

The days of beating up on, and making a victim of this faggot right here over with. I'm not going to be a victim of shit anymore. I'm fighting back, you hear me? Laying down and dying is what the world wants out of trans women. I'm not going along with the fucking plan.

I almost let this bullshit take my life from me. Almost let it take me from everybody that loves me. Nobody's putting hands on me again. I looked my own death in the eye. I ain't scared of shit, now. I'm nobody's victim, including myself.

 

[sm1the]

It does make sense that it is constant flow, since the hood is not sealed like a mask would be.

They do appear to make an ELSA type that does use a demand valve. This is interesting.
Muster escape set

Top 3 are all Scott I think.
First one is mine.
Other 2 below LDV.(2,3)

When u spoke of LDV initially ,its the Draeger (5th on list) I was referring to with hard full helmet.
Scott makes a similar one(on list).

I almost bought this 2nd hand for couple hundred $ but decided against it.
I figured an EEBD is simpler,less moving parts(less risk),positive pressure simply works without worrying too much about nose/mouth seal etc.

 

[devils~advocate]

Top 3 are all Scott I think.
First one is mine.
Other 2 below LDV.(2,3)

When u spoke of LDV initially ,its the Draeger (5th on list) I was referring to with hard full helmet.
Scott makes a similar one(on list).

I almost bought this 2nd hand for couple hundred $ but decided against it.
I figured an EEBD is simpler,less moving parts(less risk),positive pressure simply works without worrying too much about nose/mouth seal etc.

Are you referring to a specific website link to a list?
The products that I saw were on a Safety products website, that I guess can be rented. I think its a UK website.

 

[sm1the]

Are you referring to a specific website link to a list?
The products that I saw were on a Safety products website, that I guess can be rented. I think its a UK website.

I forgot to mention that part! Lol.
Duckduckgo -Muster escape set.
Its the 1st link

 

[devils~advocate]

I forgot to mention that part! Lol.
Duckduckgo -Muster escape set.
Its the 1st link

Yes that is the same link I was looking at. Seems these are only available in UK

 

[Missyabuddy]

I've read online that this method isn't actually painless, I read that they've witnessed prisoners in the US get executed through it, and they'd scream in pain or something? is this true? I assume you guys have already read this too, has it been proven/disproven?

 

[Blockz]

A higher density of a gas/fluid implies a higher drag force if other conditions are equal.

Drag Force

My notes on math, computer science, philosophy, personal projects, and more.

ozaner.github.io

Since nitrogen has a significantly lower density than argon, it will create a smaller drag force when moving through an obstacle than argon would do as long as other conditions for both gases are nearly the same. A smaller gas velocity implies a smaller drag force too, so any decrease in the drag force inside a flow meter can be interpreted by the device as decrease in flow rate.

Depends on how much gas you have and whether a higher flow rate can produce inconveniences.

I can't read the units due to low image quality. If the outer scale on the left gauge is L/min, then this device should be suitable.

I was sure the that if 15lpm is desired then on the argon regulator it would read a higher reading as it's optimised for argon/co2 as the dial reads not for nitrogen even tho the flow of gas is nitrogen.

As argon is the reference gas but then that means nitrogen would read differently so on the dial would be higher than 15 coz argon's denser and if the conversion rate is 1.4 you would do 15lpm x 1.4 and you get 21 but it will still be 15lpm just the reading will be 21 on the dial of the regulator no?

 

[Intoxicated]

I was sure the that if 15lpm is desired then on the argon regulator it would read a higher reading as it's optimised for argon/co2 as the dial reads not for nitrogen even tho the flow of gas is nitrogen.

As argon is the reference gas but then that means nitrogen would read differently so on the dial would be higher than 15 coz argon's denser and if the conversion rate is 1.4 you would do 15lpm x 1.4 and you get 21 but it will still be 15lpm just the reading will be 21 on the dial of the regulator no?

It's likely that many flow meters estimate the flow rate based on the aerodynamic force created by the flow of gas, since the force is easy to measure directly, unlike the velocity or volume per time. The flow rate (let's designate it as X) is proportional to the speed of the gas v and the flow cross-section S:

X = v * S

The formula for the aerodynamic force is

F = ρ * C * A * v² / 2

So if F is known, we can calculate the velocity v as

v = √(2 * F / (ρ * C * A))

and then the flow rate as

X = S * √(2 * F / (ρ * C * A))

Since S, C, A are nearly constant within the same measuring device, it's possible to calibrate the device for a particular gas density ρ, so it will correctly indicate X without knowing the precise values of S, C, A. Even ρ is not needed to be known if by convention the flow meter is supposed to be used only for a particular type of gas.

If we change the gas density ρ to some new density ρ' while preserving the same gas flow rate and other parameters, then new aerodynamic force F' in the flow meter will be

F' = ρ' * C * A * v² / 2
F' = (ρ' / ρ) * ρ * C * A * v² / 2

The flow meter will try to estimate the gas velocity assuming that ρ, C, and A were not changed, so it will produce erroneous velocity v' as

v' = √(2 * F' / (ρ * C * A))

After substitution of F' from above we get

v' = √(2 * ((ρ' / ρ) * ρ * C * A * v² / 2) / (ρ * C * A))
v' = v * √(ρ' / ρ)

where v is the actual gas velocity.

The indicated (erroneous) flow rate X' will be

X' = v' * S = v * √(ρ' / ρ) * S = (X / S) * √(ρ' / ρ) * S = X * √(ρ' / ρ)

So we get:

X' = X * √(ρ' / ρ)

where

X is the real flow rate,
X' is the indicated flow rate,
ρ is the density of the gas for which the flow meter is calibrated,
ρ' is the actual density of the gas passed through the flow meter.

This formula matches the calculations mentioned in the thread linked above.

 

[Intoxicated]

By the way, I can remind that in case of having doubts it's possible to measure the gas flow rate using the water displacement method and clock. This approach can be used for verifying the estimated flow rate based on the gauge readings.

Spoiler: Gas collection using water displacement method

The idea is put a hose/tubing in a flipped large bottle (like 5 L or more) filled with water like on the video above and then measure the time needed to displace all water there by steady flow of the gas coming through the hose/tubing. The volume of the bottle divided by the time passed will be equal to the real gas flow rate. In order to reduce the effects associated with water resistance, it's better to put the end of the hose as close to the top as possible so that the gas would mostly come from the hose/tubing without forming bubbles going through water.

 

[outrider567]

I've read online that this method isn't actually painless, I read that they've witnessed prisoners in the US get executed through it, and they'd scream in pain or something? is this true? I assume you guys have already read this too, has it been proven/disproven?

Totally wrong and disproven, condemned prisoners hold their breath and fight it, unlike us, who embrace it, and can take long deep relaxing breaths--After about 10 breaths, we slip into peaceful unconsciousness--Breathing in 99% Nitrogen feels EXACTLY the same as breathing in air, zero difference, and I ought to know, I've already done it 5 times(stopped after 6 breaths each time after seeing pulse oximeter drop to 77, My Oxygen then proceeded to drop to 40), there is no more peaceful death than Nitrogen with EEBD Hood--The human body has an inherent flaw, it doesn't recognize that breathing in 99% to 100% Nitrogen is lethal to the human body--The only thing you'll notice is that heartbeat jumps quickly because it gets irritated when Oxygen is rapidly reduced

 

[devils~advocate]

Totally wrong and disproven, condemned prisoners hold their breath and fight it, unlike us, who embrace it, and can take long deep relaxing breaths--After about 10 breaths, we slip into peaceful unconsciousness--Breathing in 99% Nitrogen feels EXACTLY the same as breathing in air, zero difference, and I ought to know, I've already done it 5 times(stopped after 6 breaths each time after seeing pulse oximeter drop to 77, My Oxygen then proceeded to drop to 40), there is no more peaceful death than Nitrogen with EEBD Hood--The human body has an inherent flaw, it doesn't recognize that breathing in 99% to 100% Nitrogen is lethal to the human body--The only thing you'll notice is that heartbeat jumps quickly because it gets irritated when Oxygen is rapidly reduced

Yes and there are many documented cases of accidents in industrial manufacturing, where workers were caught off guard and succumbed to hypoxia. On the flip side, there is a documentary video that shows a pig that goes unconscious from a eating at enclosed trough filled with gas.....only to awaken again and go back to feeding at the same trough.

 

[sm1the]

Thi

By the way, I can remind that in case of having doubts it's possible to measure the gas flow rate using the water displacement method and clock. This approach can be used for verifying the estimated flow rate based on the gauge readings.

Spoiler: Gas collection using water displacement method

The idea is put a hose/tubing in a flipped large bottle (like 5 L or more) filled with water like on the video above and then measure the time needed to displace all water there by steady flow of the gas coming through the hose/tubing. The volume of the bottle divided by the time passed will be equal to the real gas flow rate. In order to reduce the effects associated with water resistance, it's better to put the end of the hose as close to the top as possible so that the gas would mostly come from the hose/tubing without forming bubbles going through water.

This is good for experimentation .However not something I would trust with my life.
For critical purposes,a calibrated flowmeter is what I would use.

You can get N2 flow indicators I think to confirm flow.
These are just for confirming flow rate ,they do not get installed anywhere .

Looks like they're about $200

What SPO2 are u using atm?

Can I also ask-
Did u mouth breath when testing?
I'm trying to figure out if you are meant to mouth breathe till LOC(then u automatically switch to nose I think) with an EEBD with exhaust valve?(ELSA)

 

[sm1the]

I'm removing -
-1 hour: A standard dose of a non-benzodiazepine hypnotic (Z-drug)/Zopiclone.
from what I gather this could affect coordination,concentration etc negatively when carrying out any steps I need to like opening valve or regulator, clicking restraint buckles etc and lead to detrimental outcomes.

It was meant to be an alternative to benzos for me.

Maybe the extended-release opioid analgesic/Tramadol will produce some anti-anxiety relief?

 

[pkeylimepie]

Anyone from Canada? Trying to figure out how to get the right flow regulator… from PP Handbook looks like the brands they recommend aren't obtainable (eg. CGA-580 from WT Farley.. ) without a valid medical license etc… I think I've figured out the nitrogen piece but really stumped here and would appreciate any advice. A little reluctant to purchase used or from Amazon to be honest.. not that I was able to find an alternative there

Much appreciated!

 

[tender]

Il from Canada , but did not buy anithing yet. Did you go to a welder supply shop ? They should have everything you need… But like i said im not sur since i did not buy anithing yet.

 

[pkeylimepie]

Il from Canada , but did not buy anithing yet. Did you go to a welder supply shop ? They should have everything you need… But like i said im not sur since i did not buy anithing yet.

Hi! Appreciate the response, I didn't purchase anything yet but I was able to find some suppliers online for the gas tanks, and reading through this thread I think the other items I've figured out.

That last one I'm struggling with is the regulator because I've contacted a few suppliers I could find online and they all refuse to sell to non medical professionals. My understanding is the regulators function is slightly different to what can be purchased otc or at general supply stores.. I've found something similar but it doesn't seem to quite fit for nitrogen and wasn't sure if I could take the risk. Feels like I've hit a dead end a bit.. harder since I'm in a really desperate state of mind and generally dont have the intelligence to really pull all of this together. still in awe of the crowd in this thread and their efforts.

I'll check out welders supply shops thanks for the tip. Will update if anything comes out of it..

 

[tender]

Hi! Appreciate the response, I didn't purchase anything yet but I was able to find some suppliers online for the gas tanks, and reading through this thread I think the other items I've figured out.

That last one I'm struggling with is the regulator because I've contacted a few suppliers I could find online and they all refuse to sell to non medical professionals. My understanding is the regulators function is slightly different to what can be purchased otc or at general supply stores.. I've found something similar but it doesn't seem to quite fit for nitrogen and wasn't sure if I could take the risk. Feels like I've hit a dead end a bit.. harder since I'm in a really desperate state of mind and generally dont have the intelligence to really pull all of this together. still in awe of the crowd in this thread and their efforts.

I'll check out welders supply shops thanks for the tip. Will update if anything comes out of it..

Fuck, Where are you in Canada, i'm from province of Québec, maybe ill face the same issue as you.. ill give you feedback from my experience i feel you when you feel like you dont have the intelligence to put all of this togheter. Its clearly not that easy… Wish you good luck and thx for ur feedback !

 

[sm1the]

I'm removing -
-1 hour: A standard dose of a non-benzodiazepine hypnotic (Z-drug)/Zopiclone.
from what I gather this could affect coordination,concentration etc negatively when carrying out any steps I need to like opening valve or regulator, clicking restraint buckles etc and lead to detrimental outcomes.

It was meant to be an alternative to benzos for me.

Maybe the extended-release opioid analgesic/Tramadol will produce some anti-anxiety relief?

This post came out wrong for some reason. It was meant to quote the medication part of this which included Zopiclone.

Post in thread 'Exit bag and inert gas megathread'

Exit bag and inert gas megathread

US SCBA: Drager 2216 psi PAS Lite Drager FPS 7000(R56200) CGA-580 to CGA-346 adapter ~2000$ US hood setup: Drager rescue hood~250$ Drager CEJN 344 coupler~140$ ACU-200 reg~100$ Middle adapter(CGA-032 to 1/4 NPT)~15$ Both will kill you,the choice is yours Hey, I don't know if you are still...

sanctioned-suicide.net

The concerned section is-

Day Before: A standard dose of a triptan for migraine prevention.
Day Of (counting down to zero):
-3 to -2 hours: A standard dose of an extended-release opioid analgesic.
-2 hours: A maximal dose PPI (e.g., esomeprazole).
-1 hour: A standard dose of a non-benzodiazepine hypnotic (Z-drug).
-1 to -2 hours: A standard dose of a prokinetic agent (e.g., domperidone).
-45 minutes: My regular dose of a LABA/LAMA/ICS combo inhaler and 40-60ml of a liquid antacid.
-30 minutes: 2-4 puffs of a SABA rescue inhaler.
Important: Don't crush any of these pills.

I later decided not to use zopiclone.

 

[BirdWatcher]

Hello everyone, new member here. I have decided on inert gas exit bag for CTB, because from all the options available to me this is probably the safest one. I haven't really found an option to get sodium nitrite and the other drugs that you have to take with it. So gas it is.

Sorry for the essay incoming, but I wanted to share my thoughts because I can't talk with anyone else about this. I have read a lot of this thread, but not all of it yet. So sorry if I'm asking or saying anything that has come up a million times before.

I had originally planned on just using those disposable balloon gas tanks. I found one supplier that promised 99,99% purity, so I ordered a canister and did some tests for how to set up all the tubing. The can did have enough helium for 15 minutes of flow, but only if you adjusted the valve every few minutes and kept opening it more and more. So I quickly realized that I'll be needing a pressure regulator and/or combine two cans with a T-piece. I wasn't sure I could trust all of that setup, because the tubing was just fixed with hose clamps since I couldn't find fittings for the can's outlet. In addition to that I would also need an oxygen meter, because I wasn't sure I could trust the purity either.

At that point I decided to look into buying something professional, seeing as it was gonna get expensive anyway and I'd rather be sure about all of this. I found a trustworthy looking company that sells large nitrogen and helium cans online for professional use and – as far as I can tell – ships them to privat adresses as well. At H4.0 purity (99,99% ?) and including pressure regulators!

I hope I'm allowed to share this picture of what they sell:

Spoiler: image of canister plus accessories

I think I'll use that to CTB. But I would appreciate it if I could get a second pair of eyes on my plan and tell me if I'm missing something. For example, I'm unsure yet if I want to order helium or nitrogen. I've heard nitrogen is better. Is that correct? But helium is lighter than air, so I think it might work more reliable to fill the bag (I ordered 55x60cm turkey oven bags). Ordering helium might also be easier to explain if anyone should ask any questions, I'll just say it's for a big party. Or for a prank maybe. Back when I graduated from school more than a decade ago we played a prank on the teachers and filled their teacher's lounge with ballons. So I guess if anyone asks why I need a 700L+ helium canister I'll just say it's for a prank like this lol.

That brings me to my second question. The pressure regulator that comes with these cans is noted as "Ar / CO2", even if you buy helium. So if I use helium I have to convert the pressure like this, right? https://sanctioned-suicide.net/threads/exit-bag-and-inert-gas-megathread.8393/page-150#post-2402183

Earlier in this thread a also found a link to this video which explains how to use a pressure regulator like the one pictured above. So that was very helpful too!

 

[NegevChina]

That brings me to my second question. The pressure regulator that comes with these cans is noted as "Ar / CO2", even if you buy helium. So if I use helium I have to convert the pressure like this, right? https://sanctioned-suicide.net/threads/exit-bag-and-inert-gas-megathread.8393/page-150#post-2402183

I'm going to use Nitrogen because it was easier for me to get and its chemically very close to air which is about 80% Nitrogen. No discomfort is expected in breathing it. The table you linked is the same as I have. There are 2 points to consider.
1. Your device is marked Ar/CO2. Ar and CO2 don't have the same correction factor but they are very close. So it seems OK to calculate for Argon. (Or for CO2)
2. The calculation method example described under the table in the second page is correct, but it is written at the box diagram in the third box "Actual Argon flow" when it should be written "Actual Helium flow".

So for another example, for achieving a 15 Lt/Min Nitrogen flow you will need to set the gauge to 12.6 Lt/Mn as the correction factor is 1.19.
(12.6 x 1.19 = 15).
12 and 15 are quite close values so an error in setting the flow or reading the gauge or even calculation is not likely to be large and disrupt the CTB process.

Also from observing the table and comparing Helium flow to Nitrogen flow, Helium flow is about 3 times higher then the gauge reading, and has a correction factor of more then 3. For me it is another reason to use Nitrogen as the reading on the gauge is much closer to the actual flow, the correction factor is close to 1 and it should be much easier to set and maintain the flow.

 

[BirdWatcher]

So for another example, for achieving a 15 Lt/Min Nitrogen flow you will need to set the gauge to 12.6 Lt/Mn as the correction factor is 1.19.
(12.6 x 1.19 = 15).
12 and 15 are quite close values so an error in setting the flow or reading the gauge or even calculation is not likely to be large and disrupt the CTB process.

Also from observing the table and comparing Helium flow to Nitrogen flow, Helium flow is about 3 times higher then the gauge reading, and has a correction factor of more then 3. For me it is another reason to use Nitrogen as the reading on the gauge is much closer to the actual flow, the correction factor is close to 1 and it should be much easier to set and maintain the flow.

Thank you for your reply! So, just to spell it out:
The Argon to Helium factor is ca. 3.15. This means that if I connect an Argon flowmeter/regulator to a helium cannister I need to set the flowmeter to 5 lpm to actually get 15 lmp of helium. If I set it to 8 lmp I get 25 lmp of helium.

Is this correct? I ask because while doing my research I found an old comment on a welding forum where someone very confidently said that it's the opposite: that you need to set the Argon flowmeter to 48 lpm to get 15 lpm of helium, and that flowmeters don't go that high.

 

[thehorizons]

(I had to research myself to understand.)
For nitrogen, you should generally open the cylinder valve all the way until it stops. Nitrogen is an inert, high-pressure gas, and its valves (typically CGA 580) are designed with a "back-seat" seal to prevent leaks when fully opened. Opening the valve all the way prevents Stem Leaks. High-pressure nitrogen valves often feature a dual-sealing design. The valve seals in two places: one when closed and a "back-seat" seal that engages when the valve is fully open to prevent gas from leaking out around the valve stem. The valve stem is the brass part of the valve 'knob' and the 'stem' that connects to the cylinder.

To confirm, it's expected right that we turn the cylinder valve all the way until it stops despite that the PSI of the regulator doesn't increase? For context, when I turn the cylinder-valve knob a bit it's at 2157 PSI I think and if I turn it more and more, the PSI is still capped. Even though I turned it more and more, I haven't turned it until it stops, as I have this subconscious fear that it'll damage the regulator (I can see the PSI not increasing beyond 2157 PSI on the regulator) or the subconscious fear that cylinder-valve knob would come off and the gas would explode out of the tank from the hole.

For context, I'm using an Argon regulator/flowmeter. My Nitrogen gas tank is 10 litres with 1500 litres of Nitrogen gas contained within it (would be less now since I've been experimenting with how to do the pressure test and I idiotically turned on the cylinder-valve knob without the regulator for a few seconds).

 

[Ima-username]

Please can someone help or answer me.
is this tank big enough the 9L one? https://expressweldcare.co.uk/product/nitrogen-gas-cylinder-oxygen-free/
I have a flow rate regulator attached to a gas tube and my exit bag. I dont want to over complicate things i just need help asap for my setup to be checked as im needing to ctb urgently

now im worrying my regulator wont fit the tank ahhh i dont have time to be messing around

if im using a co2/argon flow rate regulator how do i get 15lpm? should i aim for 12lmp on the co2 gauge?

 

[DeathSweetDeath]

Hi! Appreciate the response, I didn't purchase anything yet but I was able to find some suppliers online for the gas tanks, and reading through this thread I think the other items I've figured out.

That last one I'm struggling with is the regulator because I've contacted a few suppliers I could find online and they all refuse to sell to non medical professionals. My understanding is the regulators function is slightly different to what can be purchased otc or at general supply stores.. I've found something similar but it doesn't seem to quite fit for nitrogen and wasn't sure if I could take the risk. Feels like I've hit a dead end a bit.. harder since I'm in a really desperate state of mind and generally dont have the intelligence to really pull all of this together. still in awe of the crowd in this thread and their efforts.

I'll check out welders supply shops thanks for the tip. Will update if anything comes out of it..

I've been told by a couple of Canadians that inert gas is simply not available for sale anymore to the general public there. I hope for the sake of your CTB plan that they left a few stones unturned when they searched for it and that you'll be able to find it.

 

[BirdWatcher]

Please can someone help or answer me.
is this tank big enough the 9L one? https://expressweldcare.co.uk/product/nitrogen-gas-cylinder-oxygen-free/
I have a flow rate regulator attached to a gas tube and my exit bag. I dont want to over complicate things i just need help asap for my setup to be checked as im needing to ctb urgently

now im worrying my regulator wont fit the tank ahhh i dont have time to be messing around

if im using a co2/argon flow rate regulator how do i get 15lpm? should i aim for 12lmp on the co2 gauge?

From what I can see: If you scroll down on that page to the "Specifications" header you get a table that lists the 9.4 L canister at a pressure of 137 bar. This gives you a total of 1288 L of nitrogen to release.
9.4 L x 137 = 1288 L

If you go for 15 lpm you get ca. 86 minutes.
1288 : 15 = 86

As for the regulator. Yes, as NegevChina explained it nicely above: 12.6 lpm on your Ar/CO2 flowmeter gives you 15 lpm of nitrogen.

So for another example, for achieving a 15 Lt/Min Nitrogen flow you will need to set the gauge to 12.6 Lt/Mn as the correction factor is 1.19.
(12.6 x 1.19 = 15).
12 and 15 are quite close values so an error in setting the flow or reading the gauge or even calculation is not likely to be large and disrupt the CTB process.

Also from observing the table and comparing Helium flow to Nitrogen flow, Helium flow is about 3 times higher then the gauge reading, and has a correction factor of more then 3. For me it is another reason to use Nitrogen as the reading on the gauge is much closer to the actual flow, the correction factor is close to 1 and it should be much easier to set and maintain the flow.

All of this is as far as I understand it myself. But as I said above, I did get a bit (unnecessarily?) paranoid though about doing the exact same calculations for helium lol.