Ranked 1st in our list of recommended caps and sells for $229.99 (as of 25/01/2019 13:31 PST details ) , more than 100% of the Happybuy Autoclave Reactor reviews are positive. With features such as operating temperature 230 working pressure 3mpa gauge heating cooling rate 5 min and the hydrothermal reactors is made of standard stainless steel 304, features high quality ptfe chamber., it is indeed our top pick among caps.