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Date:         Tue, 22 Jul 2008 09:17:48 +1200
Reply-To:     Association for Recorded Sound Discussion List
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Sender:       Association for Recorded Sound Discussion List
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From:         Marie OConnell <[log in to unmask]>
Subject:      Re: Mould  &tape
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Hi Will About 10 years ago I conducted a study here to determine the extent of our collection that displayed SSS. The result of this, even though not terribly scientific, showed me that approximately 15 - 18% of our analogue tapes had SSS. At the time this was mainly confined to 7 inch reels and I saw fewer problems with the 10.5 inch tape stock. This is now changing especially now that we are getting more accessions. It is with the accessions that I see the most tapes with mould. All I can put this down to is the lack of constant and proper storage conditions from where they have been previously stored. Our accessions come from a variety of radio stations, ex-broadcasters and the general public. We are currently addressing this problem and are building a purpose built area for accessions and a 'contamination' room. This room with be strictly for dealing with mouldy tape. It will have at least one dedicated machine, probably an Otari MX50-50 (with a backup machine) that will only have mouldly tape put on it. They will be cleaning machines only and modified for this purpose.This will be covered by a fume hood. Also, an oven will be installed and, like Richard, we will need to look at a second dedicated oven. Also, we will be setting up a cold playing machine and fridge using Richard Hess's technique, which may be in this area. It could also contain my isopropyl drip machine. As we are in the early stages of this I need some expert advice from some of our colleagues here, such as SpecBros, Richard (who has been extremely helpful already), etc. Any relevant and helpful suggestions gratefully accepted! I will keep you posted about our progress! Cheers Marie Marie O'Connell Analogue Tape Preservation Archivist Sound Archives/Nga Taonga Korero PO Box 1531 Radio New Zealand House Level 1, 51 Chester Street West Christchurch Phone +64 3 374 8443 Fax + 64 3 374 8448 www.soundarchives.co.nz --- My opinions do not necessarily represent those of my institutions --- >>> [log in to unmask] 22/07/2008 1:31 a.m. >>> The following quote is taken from the website of an audio transfer business in the southwest of Scotland (http://www.preciousvoices.co.uk/) "[Mould on tapes is] caused by storing tapes in damp or humid places during warm moist Summers and its destroying tapes as never before. Its as infectious to other tapes as measles is to children and if it gets onto the recording heads of tape players it destroys them too, as well as infecting every other tape played on that machine. So its not surprising that there isn't a professional audio restorer in the World that will handle mouldy tapes. From a rare phenomena seven years ago its now affecting almost ten per cent of all the old audio and video tapes seen by specialist audio restorers." Does this reflect anyone else's experience? Will ************************************************************************** Experience the British Library online at www.bl.uk The British Library's new interactive Annual Report and Accounts 2006/07 : www.bl.uk/mylibrary Help the British Library conserve the world's knowledge. Adopt a Book. www.bl.uk/adoptabook The Library's St Pancras site is WiFi - enabled ************************************************************************* The information contained in this e-mail is confidential and may be legally privileged. It is intended for the addressee(s) only. If you are not the intended recipient, please delete this e-mail and notify the postmaster@bl.uk : The contents of this e-mail must not be disclosed [log in to unmask] : The contents of this e-mail must not be disclosed or copied without the sender's consent. The statements and opinions expressed in this message are those of the author and do not necessarily reflect those of the British Library. The British Library does not take any responsibility for the views of the author. *************************************************************************


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