Either the “drum” or “rack” method may be employed, and in either
case after dyeing for ten minutes (during which time the drum or rack
should be agitated to ensure even dyeing and prevent accumulation of
air bubbles) the film should be given a thorough rinse in plain water.
Before drying films on racks it is advisable to set the rack at a
slight angle for a few minutes, to enable the surplus water to drain
off more readily through the perforations. If drums are used for
drying it is advisable to remove the surplus water by whirling the
drum previous to drying.
If uniform results are to be obtained, film should never be passed
through the projector before either tinting or toning.