Translations:Het detecteren bij podiumkunstenorganisaties van films en bijhorende magneetbanden die zijn aangetast door het azijnsyndroom/1/en

In 2015-2016, Het Firmament and PACKED vzw made an inventory of the audiovisual archives in the performing arts sector. A number of these archives contained film content. We suspected that some of these materials had been affected by vinegar syndrome and were already deteriorating, so we used A-D strips to test the acidity levels. Around 72.6% of the material we checked had a pH value of 5 or lower, and so was clearly affected, meaning it had already deteriorated a certain amount. Fortunately, the acidity had only reached the autocatalytic point (pH value: 4.6) in 1.2% of the film stock, and was still in a good enough condition to be digitised. Vigilance and appropriate storage conditions are recommended to prevent further deterioration.