I need to transfer a 5 litre container of oxygen sensitive liquid chemicals within an inert atmosphere to smaller 100ml bottles. I'm going to do so using a vacuum glove box purged with nitrogen. I have very little experience using a glove box but as far as I understand, you'd first pull a vacuum for the main chamber a few times to remove any oxygen, moisture and contaminants, then purge it with nitrogen. Afterwards place the item you wish to bring into the glove box inside the antechamber, pull a vacuum within the antechamber a few times like before then purge with nitrogen to meet the same kind of atmosphere as the main chamber, then open the antechamber latch within the main chamber to bring in your item. Proceed with the operation.
The obvious issue here is a vacuum would boil the liquid chemicals if not effectively sealed. But the whole point of this operation is to only open the 5 litre container once inside an inert atmosphere, but I can't bring it into that atmosphere without risking the safety hazard of placing it under a vacuum prior to purging. The only idea I have is to simply not run a vacuum for the antechamber and just purge it with nitrogen, but of course would defeat the purpose of working in an effective inert atmosphere. The state of the unopened container is sealed with a standard commercial heat induction sealed liner like you'd find for unopened liquid medicines, and with a child safe cap.
Any recommendations to how I can ship this safely into the glove box?