A professional who tends equipment that mixes brine solution of specified sulfur-dioxide concentration in vat to bleach and preserve cherries prior to processing them into maraschino cherries. Respnsibilities include:

• Turns valve and observes volume indicators to fill vat with specified volume of water.
• Screws hose coupling on outlet valve of sulfur-dioxide gas container, using wrench, and lowers other end of hose into water.
• Reads chart and gauges and opens valve to admit specified amount of gas into vat to obtain solution of specified concentration.
• Draws sample of brine solution from vat and tests it for volumetric concentration, using test equipment and reagents, such as starch and iodine.
• May add lime, according to formula, and in proportion to volume of brine and ripeness of cherries to provide firming agent.
• Mixes lime in solution, using paddle.
• May pump brine from vat into plastic-lined bins filled with cherries.