For several years now three SEM labs here at the Univ of Michigan have not been using sulfite baths for treating Poloroid P/N negatives. Instead, they merely rinse them for an hour or so in warm running water (only a slow flow is needed-just enough to keep the water lukish) and then hang them up by the corner to drain and dry on spring-clip-type clothespins that are strung on a piece of rope or wire. This eliminates the cost of the sulfite bath, the problems of disposing of the spent bath liquor, and the ungodly mess that students always produce by splashing the sulfite solution all over the lab. Try it, you might find it satisfactory for your purposes.

Wil Bigelow
(bigelow@umich.edu)