All,
As I disseminated to all a few months ago, my rotary pump gave out. I am having a few problems fractionally distilling, and would really like this option, as I absolutely refuse to waste water with a water aspirator (Green Chemistry my butt!). As I already have sufficient access to a rotovap anytime in my lab, this will be the absolute most expensive purchase of my young chemical career. Vacuum just makes everything easier! (especially with azeotropes using swing distillation-->GREAT new trick I learned)
More to the point: Any particular thumbs up for one particular pump (links appreciated). Also, any thumbs down. I want a 2 stage rotary vane pump. Not buying used again.
-Zack