The First Defender can quickly identify what?

• A. Known contaminants only
• B. Temperature readings
• C. Unknown solid and liquid contamination
• D. Device color

Answer: (C)

The key idea is rapid identification of substances in the field by analyzing their chemical signatures. The First Defender is a handheld infrared spectrometer that creates a spectral fingerprint of whatever solid or liquid you sample and then compares that fingerprint to built-in libraries to identify the material. This lets you quickly determine what an unknown contaminant is, whether it’s a solid residue or a liquid, which is crucial for choosing decontamination steps and protective measures. It isn’t used for reading temperatures or detecting color, and while it can recognize known contaminants if they’re in the library, its strength lies in identifying unknown contaminants by their spectral match. So, it’s best described as quickly identifying unknown solid and liquid contamination.