This section includes treatment of audio and video tapes, computer tapes and floppy disks.
It is important to note that prolonged exposure to water will cause chemical breakdown of the tapes. Magnetic tapes can withstand temperatures up to 65.C/150F combined with a maximum relative humidity of 85% wheras Diskettes when in envelops suffer damage at 51.C/125F at a relative humidity of 85%.
Separate the wet from the dry tapes.
Check labels for legibility and replace if necessary.
Wet tapes should be removed from their containers and any water allowed to drain.
Dirt and debris must be rinsed off with clean or distilled water.
Computer disks in plastic sleeves, if slightly wet, may be dried with a hand held hair dryer provided no heat is used. Set the dryer to air only.
Wet computer disks should be cut out of their plastic sleeve, rinsed of all debris, wiped with a soft cloth, and air dried. 39)
Allow tapes to dry without heating, preferably where there is high air circulation.
Once dried, run the tapes on a tape cleaner 6 or 7 times to remove debris. If there are oxide residue deposits on the cleaning tissues, discontinue treatment and consult a conservator. If there are no deposits, re-record the information onto new tape. 40)
When possible, it is best to replicate tapes and disks from security masters to ensure that the integrity of the information is retained.
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