Which of the following best describes the primary purpose of the TruDefender FTIR?

• A. Identify unknown chemicals in the field
• B. Measure atmospheric humidity
• C. Sequence DNA
• D. Detect magnetic fields

Answer: (A)

The TruDefender FTIR is designed as a portable chemical-identity tool for field use. It works by shining infrared light on a sample and measuring how the molecules absorb specific wavelengths, creating an infrared fingerprint that can be matched to a library of known substances. This lets responders quickly identify unknown chemicals on scene, which is crucial for safety and response decisions. It’s not meant for measuring atmospheric humidity, sequencing DNA, or detecting magnetic fields, so those tasks would require entirely different instruments.