Chemical shelf life

[khinmarn]

I have some leftover D76 and Tetenal SuperFix but unsure if I can continue in using them after 4 years? Any words of advise as the Product sheet does not seem to state this. Thank you.

 

[CaeSiuM]

Not sure abt the Tetenal but for the D76, just throw it away. It's probably yellow by now. Normally if you keep the D76 stock(not 1:1) solution in a full bottle(without air in it), it can keep for around 6 to 8 months. Longer if you keep it in total darkness but never tried that.

Hope that clears your doubt.

EDIT: My bad, I figured you could be referring to the powdered version. That I'm not too sure but if it's not kept in an air-tight container, you should throw it too. D76 is still relatively cheap for a pack to make 1 US gallon.

You probably won't want to develop anything impt with it. Perhaps you can mix the working solution and do a strip test if you're really keen to use it.

 

[khinmarn]

Thanks, I took your advise, threw out all the stuff except photo flow and got fresh ones. Thanks for your advise.