A professional who assists pilot-control operator in testing methods and chemical processes for product development. Respnsibilities include:

• Climbs absorption, fractionating, and scrubbing towers to collect samples of solutions or products for laboratory analysis.
• Performs routine titration, concentration, and gravity tests, using standard test equipment.
• Adds catalysts, reagents, liquids, or solids to solutions as directed.
• Reads gauges and charts and records operational data in plant log.
• Performs other duties as described under helper master title.