The BA310 microscope platform is designed for daily routine use in universities, clinic, laboratories, and any other science or medical fields that require quality optical performance. The Koehler configuration in the model allows for maximum illumination quality. The microscope comes with various contrast methods, including phase contrast polarization, and dark field. There are discussion and teaching devices on this model, which is why it offers long term functionality to all users. It comes with coaxial coarse and fine focusing and your choice of halogen or LED light. The elite models have halogen and LED interchangeability.