Which statement accurately describes the device’s primary field-use purpose?

• A. To measure atmospheric radiation
• B. To identify unknown solid and liquid chemicals in the field
• C. To analyze soil composition
• D. To identify unknown gases in the field

Answer: (B)

This device is designed to identify unknown solid and liquid chemicals in the field. It works by probing a sample and generating a chemical signature—often a spectral fingerprint or other diagnostic signal—that can be matched to a library of known substances. That quick identification is essential for making safety decisions, assessing hazards, and guiding the appropriate response on scene, all without needing to collect samples back to a lab.

Other tasks like measuring atmospheric radiation, analyzing soil, or identifying unknown gases require different instruments and measurement approaches, so they’re not the primary purpose of this field identification tool.