A professional who tends continuous-process equipment that purifies mercury recovered from electrolytic cells. Respnsibilities include:

• Turns compressed air and water valves to start flow of mercury through acid bath and purification towers that remove contaminants from mercury.
• Drains purified mercury into storage tank.
• Refills purifying towers with mercurous nitrate purifying agent and verifies specific gravity of nitrate, using hydrometer, to ensure efficient purification.
• Cleans and flushes towers, using water hose.
• Records weight of mercury purified during shift.