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Mar., 1933] EXCHANGE PRACTICE 205
No. 4 is very wide. New film can be graded only as No. 1 , and ' 'junk' ' film can be graded only as No. 4; whence it follows that No. 2 film is considered to be good film, but its acceptance in a class "A" house would be questionable. Therefore, it is considered good film until the inspector finds out otherwise and marks it as "3," meaning in poor condition. Dirt and oil on the film should not be considered in grading the film, as obviously any grade of film can be dirty or oily, but be restored to the proper condition by cleaning or processing. The sub-committee feels that it is desirable for every exchange to have available a place where dirty and oily film can be cleaned.
Film can be satisfactorily cleaned by cleaning machines now on the market. If done in the exchange, it is impracticable to attempt to clean film by hand. All cleaning fluids should be non-inflammable and uninjurious to celluloid or gelatin. Carbon tetrachloride can be used satisfactorily for cleaning film, as can trichlorethylene, but the use of either requires proper ventilation.
For exchanges that would operate their own cleaning plants, the sub-committee recommends the use of a machine that submerges the film in the cleaning fluid, cleans the emulsified dirt and oil from the film by passing the film through a series of soft rubber squeegees, and polishes it by passing it over revolving rollers covered with soft flannel. The machine and the room should be well ventilated.
Film should be inspected and repaired immediately upon being returned from the theater, and the condition of the film should be noted and recorded on the "film record card." When undue damage has occurred to any part of a print, the record card should carry information of the damage and the name of the theater responsible for it. The booking manager of the exchange should be furnished with complete data on the damage, repairs made, and the replacement parts ordered when necessary.
Inspectors should not be permitted to wear anything on their hands other than a light cotton glove. While inspecting film, all jewelry should be removed from fingers and wrists.
All film should be inspected from the left rewind to the right, beginning with the "tail" of the reel outward, so that the inspected film reel ends on the right-hand rewind with the "start" or head of the reel outward. As all splices are made by scraping the film on the left of the damaged part, this routine results in a splice that is better fitted to pass through the curves and loops and over the sprockets of a