In my photography class, my film will get chemical burns. Why is this? and how can i prevent it?

Question

what am i doing wrong?? I have only had one perfect roll and it was the very first one i did! My teacher couldnt even give me an answer.. today they were pink burns..but usually are just dark.
should i put the fixer in longer?

used 400 Tmax fiilm and other times ilford hp5.. both black and white

Answer 1

Pink usually indicates underdevelopment. Fixing longer won't help.

I would have to see the film to give you a more definitive answer, but I suspect that the film is getting bunched up when you put it on the processing spool or else your agitation needs some attention.

Edit:
I should have said that the pink (actually magenta) color indicates underdevelopment for color transparency film. If you have B/W film and it is an opaque pink color like the film base, then neither the developer nor fixer is getting to the film. Fixing again will clear that area, but any image there is lost. This condition is definitely caused by layers of film touching one another during processing.

Answer 2

You don't say what TYPE of film. My guess is: you are using Black & White. The old, yet beautiful, Panatomic-X ASA-32 film development called for a minimum of 45 minutes of cold, running water. Photo B&W prints wash for 4 hours if you want permanent whites. Fixative is non-critical, it just neutralizes the developer.

edit: I like the first answer, his answer reminded me I did used to get pinkish blobs on my filmstrips because I buckled the strip while spooling.

Answer 3

Um they are not CHEMICAL burns, and there are two reasons for what you are seeing the pink is because you are right the film has not properly been fixed.

the Dark is happening LONG before you get the film into chemicals. what you are seeing are light leaks. I would have your camera checked out because it sounds like it is not light tight