I appreciate your concern Danger, but we're you to read my post rather than searching it for keywords, you would see I want to STOP exposure of things to radon, I'm am not "messing about". I included such information to explain why I seek to use a vacuum chamber since the most frequent question...
I seek to build a vacuum chamber for shipping radon contamination sensitive samples. The cylinder will have a height of approximately 2 inches, and needs an inner diameter of 10 inches. The plan is to weld stainless steel pipe to a plate on the bottom, and to have a lid bolt on to the pipe with...