A professional who controls semiautomatic refinery equipment to convert starch into liquid sugars and concentrate sugars to specific density. Respnsibilities include:

• Controls pumps and flow of materials through converters, neutralizers, and evaporators, as instructed.
• Operates equipment manually during breakdowns.
• Observes instruments to detect equipment malfunctions and reports readings to refinery operator.
• Observes equipment to detect and correct fluid leakage or spillage.
• Tests sample of product to verify specific gravity, acid strength, and filtration, using hydrometer and other standard test equipment.
• Adds acids or alkalies to neutralize converted sugar liquors, and verifies concentration, using pH meter.