How to know shatter is "done"

[GroovyOctopusLabs]

Purging Shatter

[image] What are these little bubbles in my bho? Is it terpenes? Is it solvent? How warm does the slab need to be to get these out? This slab has been in the vacuum oven at -29hg for more than 30 hours at 76F to 96F . I’m using a Chinese vac oven that looks like an across international replica. The slab was made with a Terpenator MK4C using 70/30butane/propane starting material was popcorn nugs and trim. I’m 800 feet above sea level. [image]