Thermal phase separation simulator

A thermal phase separation simulator for testing chemicals comprising:

• a circular block heater carousel made of thermally conductive material and configured to be mounted on a support and rotated relative to the support, wherein the carousel includes a top surface, a bottom surface, an outward facing side surface, and a circular array of test wells having openings through the top surface for receiving a plurality of test bottles;
• a heating element in thermal contact with the circular block heater carousel for heating the thermally conductive material of the circular block heater carousel;
• and
• a thermocouple in thermal contact with the circular block heater carousel for monitoring the temperature of the thermally conductive material of the circular block heater carousel;
• each test well having an illumination port for receiving light emitted from an illumination source to illuminate the test well, and a vertical slit in the outward facing side surface of the circular block heater carousel to allow visual observation or imaging of a vertical swatch of a test bottle received in the test well.