Mark;

We typically used small strips (35mm x 12") to check new coatings and new chemicals out. Then we processed a full roll. I have never seen this happen. These were 1 L to 2 L tanks for the strips and about 2L - 4L for the full rolls. We used both hand agitation (dip and dunk) and Nitrogen burst, and these were all comparable.

I have no explanation.

PE