A professional who controls equipment to prepare chemical solutions to meet customers' small-lot orders or special specifications, performing any combination of following tasks. Respnsibilities include:

• Starts pumps and agitators.
• Turns valves to admit and discharge chemicals to and from process vessels and to weigh tanks.
• Observes scales and stops pumps when required weight is attained.
• Mixes chemicals, according to proportion tables and prescribed formulas, in reaction vessel, and turns steam valves or sets thermostat to heat vessel to specified temperature.
• Mixes prepared materials with precipitants to produce slurry in dissolving and precipitating tanks.