I have used a Unicolor motor base with both Unicolor, Beseler and Dev-Tech drums for developing sheet film in various sizes. They all worked fine for me and I imagine the Cibachrome type drum should work fine as well, provided the cap allows for a sufficient quanity of develper, which of course can vary with developer and strength of dilution.

With any type of rotary processing I strongly recommend the following.

1. Presoak of three to five minutes, and make sure that the back of the film is wetted, especially with smooth wall tubes like the Cibachrome, Dev-Tech and BTZS.

2. Lift the drum from the motor base every minute or so and give it vigorous sideways agitation to prevent bromide drag and to break patterns caused by constant agitation on one plane of rotation.


Sandy King