A professional who controls saturator tank and auxiliary equipment to precipitate ammonium sulfate by reaction of ammonia with sulfuric acid. Respnsibilities include:

• Turns valves to admit sulfuric acid and liquid or gaseous ammonia to saturator until precipitation occurs, and to regulate saturation of solution, using titration test to determine acidity of bath.
• Observes temperature and pressure gauges to ascertain that process conditions meet plant standards, and turns valves to maintain operating equilibrium within specified range.
• Notifies supervisor or starts pumps to discharge precipitate onto drain table to settle out crystals, and pumps strained liquor back to bath.
• Records gauge readings for operating log.
• May move controls to reheat gas prior to saturation.
• May tend centrifuge to dry ammonium sulfate.
• May take samples of product and constituents for laboratory analysis.