"It's the only way to be sure."
...I also don't know what conditions need to be present for an ignition event to happen.I honestly have never personally seen an auto ignition or a flash point event...
UPDATE: I just removed my Chinese filter and emptied the molecular seive. I had the cotton filter on both the input and output side of the filer with the seive in between. I did not line the filter with PVC or plastic. Contrary to the warnings from the air tank expert, there was no damage to the inside of the filter tube. This was after approximately one year.
For easier reference I had posted my findings in reply #87 of this thread.Here is the link to what I found:https://www.gatewaytoairguns.org/GTA/index.php?topic=126349.msg1280872#msg1280872Thanks,Taso