I have read that a way of testing my fix solution is to check the clearing time with a piece of dry film. Let's say I've got an exposed roll of 120 film. Obviously, if I try to get a piece of dry film from such a roll, I run the danger of exposing the film to additional light. If I try an do this test in the dark, how can I see (unless I used a dark room light). Did I just answer my own question? If I take the test strip of film after I have developed and "stopped" it, then it's not "dry film" is it? I'm just looking for some clarification before I go ahead with the test.