Application of Two Analytical Test Methods to Predict Processed Image Stability
Two existing test methods for measuring retained chemicals in processed films and papers have been slightly modified and used to predict image instability during storage. One method is a titration and the other is a silver stain test that is measured densitometrically. The methods are relatively insensitive to time-lapse between processing and analysis. One practical application of the methods is illustrated by a survey of Eastman Color Films processed by 28 motion-picture film processing laboratories. It is recommended that the simpler of the two methods, the CD-Index method, be used by processors of Eastman Color Films as a measure of the effectiveness of washing. A CD-Index tolerance value indicative of satisfactory washing is suggested for the Eastman Color Films. It is further suggested that processors of other products apply one of these methods.
- Print ISSN
- 0361-4573
- Published
- 1962-07
- Content type
- Original Research
- DOI
- 10.5594/J09356