Diafine - Shelf Life of Stock Solution

[Jim Cole]

Hi all,

I've got a batch of Diafine that I mixed as a stock solution about 4-5 months ago. It's been stored at room temp in standard brown bottles, mostly in the dark.

I'm ready to use Diafine again and was curious if anyone knows how long a stock solution is good for? The box says it is "unusually stable and has a long shelf life".

I don't know what that means, though.

I have almost 3 liters each of A & B should I give it a go or should I just mix a new batch?

Wisdom???

Thanks,
Jim

[Bill_1856]

At least a year. Probably two.

[Jim Cole]

Thanks, Bill. That's what I wanted to hear.

Gonna try and shoot some Efke positive paper for the 1st time tomorrow and wanted to use the Diafine as the developer. Should be fun.

[David Karp]

In my experience, it lasts longer than you feel comfortable using it. I used to dump it even though it was working, because I could not accept that it could possibly keep going!

[Jim Cole]

Thanks, David. I know how you feel.

[Bill_1856]

Thanks, David. I know how you feel.

Oh boy, me too! Also Rodinal and Ansco 30.

[Jeremy Moore]

In my experience, it lasts longer than you feel comfortable using it. I used to dump it even though it was working, because I could not accept that it could possibly keep going!

Ditto.