Blank subtraction is always required.

Select ALL information that strengthens your forensic comparison conclusion.

“Hot + stirred” is preferred over boiling during nitric digestions to reduce NOx risk and bumping.

Which items belong in your data package submission for the fiber lab?

In forensic terminology, fibers are most often considered ________ evidence.

Polyester and acetate can sometimes look similar in 1700-1200 cm^-1, so checking 3000-2800 and 900-650 cm^-1 is recommended.

A ________ _______ focuses and contains the microwave energy where it is needed. 

Why is CCV “independently prepared”?

Select all the reasons ATR–FTIR is preferred over destructive fiber tests when sufficient sample is available.

ATR–FTIR is avoided in forensic fiber analysis because it permanently alters the sample and prevents later testing.