[QUOTE=David William White

Find the minimum time for each film type to just get to maximum black through the film rebate (edges) for a mid-aperture exposure via test strip. Record aperture, time, enlarger height, and contrast filter.

Thanks! I wasn't aware that I should use a filter, I do have them so I will try it out. Also, did I understand correctly, that each film type has a recommended exposure time? Or did you mean each paper type?