Hazmat Specialist Practice Questions - Hazardous Materials Specialist (NFPA 470) Certification Exam

A photoionization detector (PID) is best described as an instrument that detects:

The percentage of oxygen in an atmosphere Many volatile organic compounds by ionizing them with ultraviolet light Only the lower explosive limit of methane Gamma radiation dose rate

Correct Answer:

Many volatile organic compounds by ionizing them with ultraviolet light

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