Quote Originally Posted by pukalo View Post
refrigeration is also bad - check your Tetenal Box, it has a Minimum storage temperature specified.
Funny thing is the kit I stored in the fridge lasted for a whole year opened, while the kit I stored in my basement lasted less than half a year. The problem may be completely unrelated to my storage, Tetenal asked for the number printed on the container.

So I am still stuck with the question: can I use B&W fixer to refix the color slides or do I have to play games with the pH value or other compounds?