DanChek Indicator Window

A Motion Picture Film Base Deterioration Window for Acetate and Nitrate Film

The DanChek Indicator Window indicates "Vinegar Syndrome". (Patent 169.491)

Danchek is a "window" to your film. It is your "nose" that never get's tired of "smelling" for sick films.

This product was nominated for the Patent of the Year Prize for 1995 in Denmark. The DanChek Indicator Window correlates with the DanChek Indicator Strips and with the Image Permanence Institute's strips as a safe and accurate way to check film for vinegar syndrome. Used in conjunction with Kodak's Molecular Sieves it provides an efficient method of continuously monitoring a collection for deterioration.

Original Danchek - Acetate. The crystals in the indicator are blue at Indicator level 0. At Indicator level 1the colour turns to green. This indicates that some degradation is occurring. At Indicator level 2 colour begins to turn to green/yellow indicating that vinegar syndrome has reached its autocatalytic point and the films should be isolated and duplicated. At Indicator level 3 colour turns to yellow. The film warps or shrinks irretrievably and has a very strong smell of acetic acid. These films must be isolated placed at a very high priority for duplication. It takes 3 to 6 hours to reach indicator level 3.

New Danchek - Acetate is a newly developed much more sensitive product, it detects vinegar syndrome in your films long before your nose can detect any scent of vinegar. The visible area of indication has moved from pH 4,8 to 5,0 and although that does not sound very impressive, it is and very visible. When the indicator is exposed to the atmosphere of your environment it will begin to react. It should be treated with care and always kept in the pouch in which it is supplied. There is a small pouch with silica doped with a strong alkaline to preserve the colour of the indicator until you need it included in the pouch. If the film itself is alkaline then the indicator retains it's original colour until vinegar has developed.

Danchek - Nitrate. The crystals are yellow and change to red. This method is more sensitive than the traditional Alyzerin test. Note that the colour shift is very slow, so expect the indicator to take a month to indicate the current state of deterioration. After that it will continuously report on the status of the film.

For additional information please read: An Evaluation of a Private Film Collection for Vinegar Syndrome using Present and New Techniques

Danchek clips into a hole (11mm) in the side of any film can. It is an efficient and affordable way to give you a continuous status report on your collection ­ right now ­ and in years to come.

Now Order On-line

Danchek Indicator Windows, Acetate, Pkg of 100, $90.00

Danchek Indicator Windows, Nitrate, Pkg of 100, $90.00

Contact us for Discounts > 1000 pcs. 10% - >5000 pcs. 20%.
All prices are ex. stock Copenhagen.

Ask for a Danchek "Sampler".

In North America order from:

Heritage Resource Management Associates
228 Broken Oak Crescent
Kitchener, Ontario, Canada
N2N 1N7
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Phone: 1-519-745-5586
Fax: 1-519-745-3585
E-mail: ritchpat@sentex.net

All other countries order from:

Dancan International Sales
Box 308
1501 Copenhagen V
Denmark
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Phone +45 4050 4180
Fax +45 4054 4180
E-mail: dancan@email.dk

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