Here is the photo that many of you have been waiting for. This is a custom made shrouded turbine mixer such as used by Kodak. It is like Gen I, and I believe that EK is on Gen III now. It is known as a PEPA or Planar Emulsion Precipitation Apparatus.
This unit is about 4" across and is designed for 1L to 10L makes. In a common bucket and very low RPMs, it can decorate a room with water if you are not careful!
How do I know that?