What is the purpose of control banding in chemical hygiene?

• A. To measure exposure concentrations accurately
• B. To optimize energy use in chemical processes
• C. To classify chemical hazards by physical state
• D. To group chemicals into categories to determine appropriate controls when quantitative data is lacking

Answer: (D)

Control banding is a practical approach to managing chemical risk when precise exposure data isn’t available. It groups chemicals into bands based on hazard potential and likely exposure scenarios, then uses those bands to decide what controls are appropriate—such as engineering controls, work practices, containment, and personal protective equipment. This framework lets you make protective, standardized decisions quickly for a wide range of chemicals, especially when quantitative monitoring data is lacking or too resource-intensive to obtain. It isn’t about measuring exact concentrations, optimizing energy use, or classifying hazards by physical state; it’s about assigning chemicals to categories to determine suitable controls in the absence of detailed data.