Which of the following is NOT a common hazmat hazard detection instrument?

• A. Multi-gas meters
• B. Geiger counters
• C. PID
• D. Infrared cameras

Answer: (B)

Hazmat detection focuses on the specific hazards you’re likely to encounter in a chemical or physical spill, so instruments are chosen for what they can detect in that context. Multi-gas meters are standard because they alert you to flammable gases, oxygen deficiency, and toxic gases in the atmosphere. A photoionization detector measures volatile organic compounds, giving rapid readings of organic vapors. Infrared cameras help engineers and responders spot gas leaks or hot spots by picking up infrared radiation and revealing issues that aren’t visible to the eye. Geiger counters, however, are built to detect ionizing radiation and measure radiation dose rates. They don’t tell you about chemical concentrations, toxic vapors, or vapor clouds, so they aren’t part of the usual hazmat hazard detection toolkit unless radiological concerns are present. That’s why Geiger counters are not considered a common hazmat hazard detection instrument.