DEVELOPMENT TIME (MIN)*
* For use with rapid x-ray developer and x-ray replenisher.
Table 4-4. Time and temperature development--75 to 90F.
Section II. SPECIAL PROCESSING METHODS
Most radiographers in their careers will be faced with processing many different
types of film. Not all films are processed by placing the film into the automatic
processor or placement on a film hanger. The following information outlines different
types of film and the proper procedure for processing.
a. Photofluorography is a complex, precise procedure. Processing of
photofluorographic film differs from the manner in which conventional x-ray film is
processed. Photofluorography is covered in SC 959. There are two basic types of
single-emulsion films available for photofluorography--green-sensitive and blue-
sensitive. They are produced in rolls 35 and 70 millimeters wide as well as in
the form of single-coated x-ray film in 4 by 5-inch, 4 by 10-inch, and 2-11/16 by
6 1/2-inch sheets. The green-sensitive films are used with green-fluorescing
DuPont-Patterson B, 52, and E fluorescent screens, while blue-sensitive films are
used with the blue-fluorescing D or D2 screens.
b. Both green and blue-sensitive roll films are available in 70-millimeter width for
use in the Fairchild Fluoro-Record Cameras, F-212. However, only the green-sensitive
film has been found useful in the 35-millimeter width. Single-coated x-ray film is
available in 2-11/16 by 6-1/2-inch sheet for use with both green and blue-fluorescing
screens. The blue-sensitive type of this film, however, is also available in 4 by 5-inch
and 4 by 10-inch sizes.
4-8. ACCESSORIES FOR PHOTOFLUOROGRAPHIC FILM PROCESSING
Safelight filters--Wratten Series 2--may be used with either blue or green-
sensitive films, but the Wratten Series 68 may be utilized only with blue-sensitive films.
Two processing hangers are available--the number 11 x-ray processing hanger and the
adjustable processing hanger.