Description
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 over the years:
- Nitrate - was used from 1890 to 1950
- Acetate - was used from 1925 to the present
- Polyester - was used from1960 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.
Follow this link for YouTube instructions for use - How to use A-D Strips
Please see the 'Resources' tab for reference guide and product warnings.
Resources
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A-D Strip Level
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Film Condition
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Recommended Actions
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| 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 |
Warning: Close contact with severely degraded acetate and nitrate films (touching and sniffing) may be a health hazard. Acetic acid and other acidic products emitted by degraded film have been known to produce contact burns, skin and mucous membrane irritations, and other physiological effects. Protective gloves and adequate ventilation are strongly recommended for handling degraded films.
Refund Policy
Suitability for Use
Conservation Supplies takes every care to maintain the highest standards of quality and customer service, however it is the users responsibility to ensure that the goods purchased are suitable for the intended purpose. No guarantee is given or implied that any product we supply is fit for any particular purpose, and our liability is strictly limited to the invoice value of the items concerned
Warranty
We supply products made by various manufacturers. The warranty of the product will be subject to the guarantee policy of the manufacturer, and any claims must be in accordance with the terms of such warranties.
Returns and Exchanges
We will accept returned goods by prior arrangement.
Please contact us on +64 6 211 3991 or email us with details.
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To be eligible for a return or exchange, your item must be unused and in the same condition that you received it. It must also be in the original packaging. The purchaser is responsible for the cost of returning the goods.
To complete your return, we require a receipt or proof of purchase.
Please note there are some items we cannot accept as a return.
These include all single items listed below:
- Single paper Envelopes
- Single Polyester Enclosures
- Single Birth Certificate Enclosures
- Single Paper Sheets
- Single Folders & Wallets
- Single Tissue Sheets
- Single pairs of gloves
- Any single item under the value of $10.00 ex GST
- Any boxes once they have been made up
If you are unsure, please contact us.
Faulty or incorrectly supplied goods will be replaced, credited or refunded in compliance with consumer statutory requirements.
Refunds and Credits
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days. Or if preferred a credit can be issued to your account.
Sale items
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Shipping
To return your product, you should mail your product to: Conservation Supplies, 12 Donnelly Street, Havelock North, Havelock North 4130, New Zealand
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.