On 03/12/2019 11:21, Jeff Layman wrote:
On 03/12/19 11:07, Martin Brown wrote:
On 01/12/2019 21:36, Nick Odell wrote:


If it is original celluloid as in cellulose nitrate then it should be
kept in a cold dark explosives bunker well away from your property. The
stuff gradually goes unstable with age and long term exposure to heat.

Old celluloid negatives of historically important news images have now
mostly been scanned to archival quality but the originals are kept in
small batches in carefully controlled conditions off site afterwards.
Some of them show slightly alarming signs of deterioration.

It generally just burns incredibly quickly unless confined or provoked
by impact when it may detonate. Basically it is sheets of gun cotton.

Perfect timing...
https://www.bbc.co.uk/news/uk-england-hampshire-50641205

Ouch - what a shame to lose so much archive material in one go.

--
Regards,
Martin Brown