A professional who tends fermenting tanks and auxiliary equipment to produce active constituent of antibiotic drug products. Respnsibilities include:

• Starts agitator fermenting and mixing tanks and adds prescribed quantities of ingredients, such as salt, sugar, and yeast.
• Turns valves and starts pumps to transfer mixture to fermenting tank and maintain specified temperature in tanks for prescribed time.
• Opens valves to admit water, liquid seed antibiotic, and foam-preventing oil, according to critical plant specifications.
• Unbolts lid of fermenter tank and measures level of solution, using dipstick.
• Turns valves to transfer mixture to crystallization tank for further processing.