A professional who tends equipment that extracts salicylic acid from sodium salicylate solution by precipitation and dries salicylic acid by centrifugal force. Respnsibilities include:

• Opens valves to pump sodium salicylate solution and required amount of sulfuric acid into extractor columns that absorb phenol from solution and cause precipitation of salicylic acid crystals.
• Opens steam valves to heat extractors to specified temperature to increase rate of precipitation of salicylic acid.
• Pumps off solution of sulfuric acid and phenol, and pumps slurry of salicylic acid through cooler to centrifugal drier.
• Tends centrifugal drier that forces out water to dry salicylic acid.
• Removes salicylic acid from drier and places acid into containers, using scraper and shovel.