DSY-433 Water separability tester is determined by stirring equal volumes of water and sample together at a controlled temperature to form an emulsion and observing the time required for separation of the emulsion to occur. This method is suitable for testing petroleum oils and synthetic fluids. Characteristic: 1. PID control and digital display temperature 2. Digital display timing with reset and maintain function 3. Three test holes for testing 4. Hysteresis synchronous motor, that speed is very stable with little noise