A professional who controls equipment that produces soap according to formula. Respnsibilities include:

• Opens valves to charge kettle with prescribed amounts of ingredients.
• Turns valve to admit steam through bottom of tank to boil and agitate mixture.
• Observes mixture through opening in top of tank to detect variations of color, consistency, and homogeneity of boiling ingredients.
• Adds soda or water to mixture as directed by laboratory; or determines degree of alkalinity of caustic soda in mixture, using meter, and adds soda or water as required.
• Observes color, consistency, and homogeneity of product to determine when boiling and agitating cycle are completed, and allows batch to cool and settle for specified period of time.
• Raises or lowers pumpline to locate separation level of neat (pure soap) and nigre (residue).
• Starts pump to transfer neat to designated department.
• Lowers pump line to bottom of tank to transfer residue to reclaiming tank.
• May calculate amount of ingredients needed to make various soaps, using formula.