A-D Strips are dye-coated paper strips that detect and measure the severity of acetate film deterioration (vinegar syndrome) in film collections.
When placed inside a closed can, bag, box or cabinet in the presence of acidic vapor given off by degrading film A-D Strips change color to indicate the severity of the level of acidity.
Each kit contains; complete instructions, a reference pencil printed with four bands of color that correspond to the level of acidity, as well as 250 detector strips (measuring 38 x 10mm).
