<p>Hello everyone,<br /> I've had a 4-liter non-diluted developer. It was an old product from a native company, originally in powder form.<br /> I've used more than half of it during 4-5 months, developing three expired films. I've tried my best to keep air out of the storage tank, and kept it in a dark, cold place.<br /> Two months ago when I was wanted to develop an expired (12/2008) Kodak Tmax 400 (the last of those three films) with it, I saw the developer has a yellowish color. The thing that I didn't see last two times. I took the risk and did the process. The result was not bad, except a few spots (seen like rust) mostly out of the frames.<br /> These three films are the only ones that I did the process myself and I have a little experience on this. So I want to know is the developer's color change due to long time storage or not? and should I use the rest of it?<br /> Thanks for any suggestion,<br /> Farzin</p>
