Images of BAD developer needed

My budding chemist daughter is doing a lab report (why yes, of course I gave her an ancient bottle of Edwal Ultra Black for analysis) and she needs an example of a film or paper developed with oxidized expired developer. Apparently, it could leave white spots and such.

If you have any paper or film with the markings, I would appreciate it very much if you can send me a photo. Thank you.

If it was expired some soups would not even give you base fog...
Or edge numbers etc.

As someone that has taught chemistry I must bring up to the OP; shouldn't your daughter be doing her own research for her paper? The idea behind the paper is for it to be a learning experience. You can point her in the right direction, but she needs to do the actual work. First she needs to determine what effect "bad" developer will have. Then she needs to search the web for examples of this problem. The web should ease this search. When I was in school the only research tool available was the library. I spent many hours there tracking down information. “What we obtain too cheap, we esteem too lightly.”

One of the courses that I had to teach was organic chemistry dumbed down to one semester for pre-med students. I still look back in horror when I think of these students eventually deciding a person's life or death.

When I have a bad developer, I throw the prints in the trash.

didjiman said:

My budding chemist daughter is doing a lab report (why yes, of course I gave her an ancient bottle of Edwal Ultra Black for analysis) and she needs an example of a film or paper developed with oxidized expired developer. Apparently, it could leave white spots and such.

If you have any paper or film with the markings, I would appreciate it very much if you can send me a photo. Thank you.

Click to expand...

some beginner photography books show bad processingexamplesin the appendix.Also take a look at Ilford and Kodak online literature for thisIf you know how to create a mistake,you usually know how to prevent it too.

Xmas said:

If it was expired some soups would not even give you base fog...
Or edge numbers etc.

Click to expand...

Soups?;never tried that but seems obvious why that would not work