This is really all about time and yield properties. Butane wants to be a gas at room temperature and ambient pressure. After enough time most of it will naturally off-gas. To Quizoking's point, there is much more to it than getting rid of the solvent. For personal use, the Mason jar-food...
I hade to chuckle when I saw this. Those are $20K when they are new . . .
The application is actually really cool. That is a Turbomolecular pump that can create an environment in the chamber that is more pristine (in vacuum terms) than outer space. We use those for our friends at Nasa to...
An analod gauge does not display enough resultuion to truly tell the difference between 29.5 and 30" Hg. Here is a link to a good vacuum pressure comparison chart. http://www.engineeringtoolbox.com/vacuum-converter-d_460.html
Check out the comparison of % vacuum to "Hg. Vacuum is not a...
You are right on to note the difference between the product temp and the controller temp. Further, there is a difference between the shelf temp and the product temp. all of the heat your product sees will be transferred by conduction from the heat source, across the shelves to your product...