DVD Content Summary - EMULSIONS AND ELECTROSTATIC TREATER PRINCIPLES: Looks at emulsions, how they are formed and several methods of treatment. Examines electrostatic treaters in general and their components. Follows an emulsion through each section of a treater and identifies symptoms of improper functioning. EMULSIONS AND HORIZONTAL HEATER TREATER PRINCIPLES: Reviews the basics of emulsion formation and treatment. Shows the design of a basic horizontal heater treater, the components and how they work in the treating process. Traces the flow of an emulsion through a horizontal heater treater. Explains horiztontal heater treater operation and points out symptoms of malfunction. EMULSIONS AND VERTICAL HEATER TREATER PRINCIPLES: Introduces the basics of emulsions - how they're formed and why they must be treated, along with methods of treatment. Examines the design of vertical heater treaters, identifies components and their role in treatment. Covers the flow through a vertical heater treater and symptoms of improper functioning.