Method Argon vs Nitrogen

[piopio]

It is really hard to find a flow regulator compatible with Nitrogen in Europe. Because of that, is Argon just superior?
Or is Argon worse for the exit bag method?

 

[NegevChina]

It is really hard to find a flow regulator compatible with Nitrogen in Europe. Because of that, is Argon just superior?
Or is Argon worse for the exit bag method?

Flow regulators that are combined with flow meters devices can all be used for Helium, Nitrogen, Air, Oxygen, Argon and CO2. However, each regulator + flow meter is calibrated specifically for a certain gas. You can use the regulator + flow meter for other gases if you use a conversion calculation. For example, if you use an Argon regulator for Nitrogen, you need to multiply the reading by 1.19
I think both Nitrogen and Argon are recommended by the PPH but since the air we breath is about 80% Nitrogen, its more natural to breath.

 

[OnceTheHappiestMan]

One doubt that I have about the use of argon is that it's supposed that one of the points of which gas to use is that one lighter than air would guarantee (as it would accumulate top to down) that it would push all air out of bag. That's why Helium was such a good option when it was easily available. If I'm not wrong, Nitrogen is still lighter, but Argon isn't.

Wouldn't that make Argon potentially worst as there are more chances of normal air being mixed with the gas in the bag, or that the residual co2 expelled after pushing down the bag won't be expelled as optimally as expected?

I would like to do a test if I had the tools…