It can also be used to perform an initial evaluation of the overall condition of older tapes in an archive. While this examination does not identify all problems that can occur, if your tape fails any of these inspection criteria, it is endangered and needs attention. Attempts to play back such tapes before treatment place them, and your machinery, at risk. The following inspection procedure should be performed in the order listed. Check physical container for damage that compromises the structural integrity of the container itself.
Breakage is a strong indication of improper handling.
If the container, reel or cassette is damaged, the tape inside is also likely to have suffered damage or contamination. Check the interior of the container and the edges of the tape for patterned black, brown, or mustard colored contamination and for fuzzy or thread-like growths that indicate the presence of fungus. Fungus can grow on tape after it has been exposed to high humidity. Tapes with fungus should be isolated and treated by professionals as soon as possible. Smell the tape as soon as it is removed from its container.