For the thread:
I went with 2000W QSonica with flow-through and batch mode setup. I’m very satisfied with the purchase, however, there are lots of improvements I want Qsonica to include. Mostly in their controller for improved automation and temperature control that I manually do now, but otherwise it’s a great system. Stable, tight temperature control was the biggest hurdle when processing large scale volumes.
I didn’t get the Qsoncia chiller because it was too small to control temp when processing large volumes (liters and gallons) at 100% amplitude (100 microns) with long on time and short off time (I use 55 seconds on:5 off). My temperature control solution is very unique and ad hoc, with lots of valves and heat exchangers, but allows for very tight control down to a single degree Celsius with zero temperature drift.
Qsonica makes all the small horns for Industrial Sonomechanics (ISM), while ISM has their large flow-though barbell horn custom made.
I use up to 2 L open top jacketed 316 stainless steel reaction vessels in batch mode, connected to my chiller. For flow-through mode I have a 20 gallon stainless steel conical jacketed process liquid tank, and the standard 250 mL closed top jacketed reaction vessel from Qsoncia (with chiller and process liquid tank sanitary connections).