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Have experience using a Varian ~10 tesla NMR to erase various magnetic media. Very quick and effective, just ensure there are no metal parts on the media which would pull it=0A into the magnet.
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with regards,
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Mike
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Michael N. Cooper MS, MPH, CIH
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Senior Managing Scientist=0A
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149 Commonwealth Drive, Menlo Park, CA 94025
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From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU]=0AOn Behalf Of ILPI Support
=0ASent: Monday, August 26, 2013 8:41 AM
=0ATo: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
=0ASubject: Re: [DCHAS-L] Still Another Question
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VCR and reel to reel use magnetic methods to store information - you're talking iron and/or chromium oxides on plastic film. Microfiche (microfilms) come in various types, one of which is the classic silver film negative, yes. But others=0A are all organic - for example, diazo compounds.
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I would assume snuggling your recorded videocassettes up to an NMR magnet would take care of scrambling them. I'd love to see an empirical test by someone on the list.
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Safety Emporium - Lab & Safety Supplies featuring brand names
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Has anyone ever characterized VCR, reel-to-reel or microfiche for silver to ensure they're not a hazardous waste?
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If you are mainly trying to destroy the info on the tapes, I recommend a magnetic bulk tape eraser.
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New ones seem expensive, but there are several used ones on e-bay, etc.
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=0ALew M.
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Thank you for all your helpful responses to my question about hazardous high school chemicals. One more question has arisen: How could an organization=0A dispose of 300-400 videocassette tapes with sensitive information? I was asked about chemical treatment - or burning, and would appreciate your advice.
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Ruth Ann
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Ruth Ann Murphy, Ph.D.
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Professor of Chemistry
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Chairperson, Department of Chemistry, Environmental Science and Geology
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Chairperson, Health Professions Advisory Committee
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Amy LeVesconte Professorship of Chemistry
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JAMP Faculty Director
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Goldwater Scholarship Faculty Representative
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The University of Mary Hardin-Baylor
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900 College Street
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Belton, TX 76513-2599
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Phone 254.295.4542
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