A professional who supervises and coordinates activities of workers engaged in mixing and packaging chemicals for use in insecticides, fungicides, herbicides and soil fumigants, utilizing knowledge of chemicals and machine operations. Respnsibilities include:

• Records on batch card quantity and type chemicals required to obtain mixture, using chart.
• Draws sample from mixing tank, using syringe, and tests dissolvability of liquid in water to determine that product meets specifications.
• Observes workers to ensure products are processed according to specifications.
• Trains new workers in methods and techniques of chemical mixing.
• Performs other duties as described under supervisor master title.