Hello all I recently purchased some spice bottles that I had believed were airtight. This was prompted by a post on a previous thread, advising that the Diamine/Chesterfield Archival Vault Permanent black should be stored in Glass due to chemical interaction with the original plastic bottle. I transferred two colours to the aforementioned glass bottles, put the stopper on and was happy with the result. Later I had the opportunity to ink a pen from the Archival Vault ink, and aside from the bottle being too wide (or there ot being enough ink in the bottle :-) ) all worked well. On the weekend I notices condensation on the inside of one of the bottles. On investigation, I discovered that the seals on these bottles were not airtight, and they also leaked when tilted too far. Ok, After a long story, here is the question. Is it necessary for inkwells to be airtight? I see all kinds of bottles out there with cork stoppers and I am wondering what characteristics, combine to make the perfect ink bottle/well? Stu