11

I forgot to label the bag and now it's been 6 months and I can't remember which chemical it is. They are both fine white powders. I know the fixer smells pretty strong so I suppose I could put some in water and see if I can smell it. Any better ideas?

| improve this question | |
  • 2
    I would use the taste test. Just kidding. – dpollitt Oct 6 '11 at 0:33
10

Since developers are often alkaline, you could use a red or purple litmus paper to test for that - if it contacts with alkalies, it turns blue.

| improve this answer | |
  • 3
    or just mix up a small batch and rub it between your fingers. The alkaline solution should have a slightly "soapy" feel to it :) – jwenting Oct 6 '11 at 6:59
  • 2
    If you don't have litmus paper, put a drop of vinegar on a tiny amount of powder and see if it fizzes. do this in a well-ventilated area, just in case. – AJ Finch Oct 6 '11 at 9:30
9

You could try a clearing test. Once you've mixed your mystery powder with water place a small amount in a graduate or glass and then snip a bit of the leader off of a roll of film. If it clears in the solution, then you have fixer. If the film remains opaque then it is probably something else. Your smell test would work as well, btw. Good luck.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.