[Mr. K]

" ...before placing it in a vacuum chamber at high pressure..

Ummmmmmm.....huh?

[Red Badger]

No wonder it’s so difficult...............

[Brooklyn Attitude]

” ...before placing it in a vacuum chamber at high pressure..
Ummmmmmm.....huh?”

Every time I have ever been asked to talk to the press about science stuff they have F-ed up the story. Freeze drying a sample (lyophilization) is done under VACUUM.