A-D Strips

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Film Base Deterioration Monitors Cellulose acetate film undergoes a slow form of chemical deterioration known as 'vinegar syndrome'. A-D Strips represent a safe and reliable method for detecting, measuring and recording the severity of 'vinegar syndrome'; in film collections. When placed inside a closed container in the presence of acidic vapour given off by degrading film. A-D Strips change colour to indicate the severity of the level of acidity.  Each kit contains complete instructions, a reference pencil printed with four bands of colour that correspond to the level of acidity, as well as 250 detector strips (measuring 38 x 10mm)