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Select ALL conditions that can produce misleading differences between fiber spectra.

Give ONE reason FTIR alone may not uniquely identify a manufacturer/source of a common fiber type.

L Vdig = [L] L and Cdig = [C] mg/L, compute mg Cr in digest. (Report answer to 4 decimal places)

When preparing nitric acid solutions, it is always safe to add water to acid, as it reduces the risk of an exothermic reaction.

Which plot feature most strongly suggests curvature (non-linearity)?

Which documentation items must appear with each submitted spectrum?

If residue remains on the ATR crystal, best practice is to clean, re-background, and potentially re-run the sample.

Which steps reduce systematic error in this lab? (Select all that apply)

Which are appropriate ways to improve confidence when results are near LOQ? (Select all that apply)

A CCV is best described as: