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Bulk load film is less expensive, but I always found it harder to print when I used it at a newspaper. Fred Picker said it was movie film made with a thicker film base so that it could stand the motors in a movie camera. I just know that the 35mm bulk Tri-X at the newspaper felt thicker and exposed differently than the regular Tri-X. I would fear that, as Melinda is using commercial processing, the processor might not understand the extra exposure I found bulk film to require. I'd stick with the regular stuff.