I would like to know what is the maximum pressure that a borosilicate still with a fractional column can withstanding without imploding on me. I am planning to couple it with an amazon vacuum chamber and 1/3 HP pump that is capable of drawing a vacuum up to 30 in hg. The reason why I am asking for this is because if I am distilling various essential oils they decompose at higher temperatures and somewhere around 30C to 40C max would be ideal. Many thanks.