A library match must always be visually confirmed.

Diffuse reflectance FTIR is ideal for thin films on reflective substrates.

Choose all correct statements about ATR crystal cleaning: (Select all that apply.)

Fiber types identifiable by C–O and C=O bands include: (Select all that apply.)

Which of the following functional groups gives two peaks near 1550 cm⁻¹ and 1350 cm⁻¹?

A new background is required when changing from [A] to [B] samples.

The Amide I band occurs around _______ cm⁻¹ and arises from C=O stretch.

Proper steps before analysis include: (Select all that apply.)

To prepare the solution containing 250 µg/mL Dodecane and 500 ppm Tridecane, you need to add both compounds to a [A] flask and fill it to the [B] mL mark.

FTIR spectra are unique to each compound and can serve as molecular fingerprints.