In my honest opinion, I think argon works great in big storage vessel with a big air headspace such as the Duran bottle. In this way you can pump in enough argon to last a long time, assuming the bottle is kept upright. Furthermore, the Duran bottle itself is quite airtight and should be able to prevent any leakage.
For smaller bottle such as a sturdy glass bottle, it is not airtight and I am not sure if there will be any gaseous exchange overtime, though the density of the argon should mitigate that to a certain extent. For sure one has to be careful not to overturn the bottle too many times. As I am not able to monitor the amount of argon gas left in the bottle (if there is going to be any losses), I am abit concern leaving thing to chance.
I may have remembered wrongly but I always thought
@Taha uses argon sealing primarily as an enhanced accelerating aging method to cure his freshly distilled oils. I think he mentioned before the small amount of Royal Chen Xiang in the Duran bottle (smell it myself while I was there) was just to illustrate the argon sealing property. Not sure if it is his intention to use it as a long term storage method.
It would be great to store the oils in Duran bottle with argon gas...provided I can afford large amount of oil to justify using the bottle!
Oh I am sure vintage oils such as Tigerwood 1995, Oud Royale 1985 or any of Ensar Olde Oud are not stored with argon? Perhaps
@Ensar can comment on this.