We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
500 C. J. KUNZ AND C. E. IVES Vol 46, No. 6
furic aid is an excellent desiccant but cannot be recommended for general field use because of its corrosive nature. However, should such an agent be the only one available, it can be used if suitable precautions are taken. Sodium or potassium hydroxide and quicklime are other examples of this type of agent.
RECOMMENDED PRACTICE
The best advice which can be given when film is to be exposed to humid atmospheres and heat is: "Do everything possible to prevent the film from absorbing excess moisture. If conditions are unfavorable, avoid long storage of film." Then, if in spite of every precaution, the preservation of the latent image is not assured, an adequate dehydrating procedure should be applied immediately. It should be kept in mind that, while suitable dehydration can retard the progress of change in sensitometric properties, it can do nothing to correct changes which have already occurred.
Film packaged by the manufacturer in tightly sealed sheet metal or flexible metal foil containers may be considered safe from change in moisture content at least while the film remains in the package. Such a film container offers no protection from the effects of high temperature, so that it should be stored in as cool a place as possible. However, if this is done, the film should be allowed to warm up to the temperature of the atmosphere in which it is to be used for a period of about a day; otherwise, moisture from the humid atmosphere is likely to condense on the film as soon as the package is opened.
The film container should not be unsealed before it is necessary to do so. If possible, film holders, magazines, cassettes, etc., should be dried before use and should be loaded promptly and sealed with moisture-proof tape. In addition, they may be enclosed in one or more moisture-proof containers, capable of being sealed. Cameras should also be enclosed in moisture-proof containers, especially if they are loaded with film. Watertight slide fastener closures have recently been introduced which may prove to be well suited for use on moisture-tight bags.
After exposure, the film holder should be temporarily sealed again until protective measures or final packing can be undertaken.
Whenever possible, film handled under unfavorable conditions should be processed promptly, if necessary using a tropical processing procedure. Such processed film should then be adequately desic