I don't quite understand. I use a few drops of mine in water (dire warnings about using too much) and per instructions use once only. I'm still using a years old plastic mini bottle.
Even as a Yorkshireman, I feel that's taking cost saving too far!I have been re-using it !![]()
I was given a small bottle of 'Kodak Photo-Flo Solution' when I started developing films more than 60 years ago now. One or two drops in the final wash of each film since and it is still going. I'm pretty sure that it will outlast me.
I think you probably take the longevity award, David, although Stephen didn't say how far back in the last century he started his bottle!The instructions on my 100cc bottle said to add 2 or 3 drops per litre. I'm still using that same bottle from the last century.