Translations:Het detecteren bij podiumkunstenorganisaties van films en bijhorende magneetbanden die zijn aangetast door het azijnsyndroom/9/en

3. A third way of finding out if films, magnetic tapes and photographic negatives/slides have been affected by vinegar syndrome is to test them with A-D strips. A-D strips are dye-coated paper strips which can be used to detect the presence of vinegar syndrome in collections, and assess how far advanced it is. The paper strips need to be placed in a sealed can, bag, box or locker together with the films, magnetic tapes or photographic negatives/slides, where they will change colour according to the acid gas produced by the decaying acetate base. The new colour represents a certain level of acidity (expressed in pH) which indicates a certain level of vinegar syndrome deterioration.