I was wanting to help semi automate a particular reaction by replacing an addition funnel with a pump to meter in reagent. One of the problems with this particular reaction is I am adding reagent solution while vacuum distilling off solvent. The reaction requires an overhead stirrer for thorough mixing, otherwise I would try to do this on a rotovap.
The scale I am running this requires ~ 1mL/min of almost 1L of solution (so a ~10hr procedure), hence desiring to get away from the addition funnel (and fiddling with the valve every 15 minutes or so to keep the correct addition rate).
I was thinking peristaltic pump since the reaction vessel is under vacuum and the volumes being pumped. Any other solutions that come to mind?