Except for Rodinal. Even oxidized, it's good for decades, just turns black.
Lovely stuff.
-Adam
Shel Belinkoff wrote:
No, many will oxidize or lose potency over time. I've opened older sealed
bags of several brands of powdered developer only to find that the contents
had turned brown, or, if they looked OK, development times were way off.
If you're going to mix your own, the shelf life of the individual chemicals
is much longer than ready made.
Shel
[Original Message]
From: Gonz <[EMAIL PROTECTED]>
To: <pentax-discuss@pdml.net>
Date: 1/10/2006 12:28:17 PM
Subject: Re: Pentax lens test on DIGITAL? All Pentax DSLR same imagaing?
I'm thinking purely B&W use on the 6x7.
So the powdered versions keep pretty much forever?
rg
William Robb wrote:
----- Original Message ----- From: "P. J. Alling" Subject: Re: Pentax
lens test on DIGITAL? All Pentax DSLR same imagaing?
There are recipes you can make at home from the raw materials. It
used to be something of a cottage industry, back in the days when they
taught basic chemistry in most schools...
I presume you are talking about B&W chemistry.
Colour chemistry isn't so simple.
William Robb
