A-D Strips Film Deterioration Monitors

A-D Strips are dye-coated paper strips that detect and measure the severity of acetate film deterioration, a.k.a. vinegar syndrome, in film collections.

When placed inside a closed can, bag, box or cabinet 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).

Three types of plastic have been used in film manufacture:

Nitrate was used from 1890 to 1950
acetate from 1925 to the present
polyester from 1960 to the present

A-D Strips are recommended for use only with acetate film. The film may be in any format: sheet film, roll film, cinema film, or microfilm.

Code	Description	Image	Pack Size	Price	Stock	QTY
L114-0002 114-0002	A-D Strips Film Deterioration Monitors L114-0002 114-0002		Pack Size: Each	Price: £56.00 ex VAT	In Stock

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A-D Strip Level	Film Condition	Recommended Actions
0	Good—no deterioration	Cool or cold storage
1	Fair to Good—deterioration starting	Cold storage Monitor closely
1.5	Rapid decay starting—point of autocatalytic decay	Cold or frozen storage
2	Poor—actively degrading	Freeze Copying advisable
3	Critical—shrinkage and warping imminent, possible handling hazard	Freeze immediately Copy

A-D Strips Film Deterioration Monitors

Preservation Equipment Ltd