D-23 stock shelf life

[Iga]

Hi all.
Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
TIA

[Alan9940]

Hi all.
Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
TIA

Why would you want to store D-23 when it's so easy to mix, as needed?

[Iga]

Why would you want to store D-23 when it's so easy to mix, as needed?

Thanks.

[paulbarden]

Hi all.
Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
TIA

In my experience, it’s good for about two - maybe 3 - months in a FULL, tightly sealed bottle.

[Iga]

In my experience, it’s good for about two - maybe 3 - months in a FULL, tightly sealed bottle.

Thank you Paul ! That's what I was asking for.
Best wishes.

[Kevin Crisp]

I've gone 7 months in a full, glass bottle. It was fine.

[Michael R]

3-6 months in a full bottle.


Hi all.
Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
TIA

[Iga]

Thanks to all, folks !
It's really great to get help in minutes !

[Michael R]

Just FYI for everyone, my source is Kodak tech pub J-1 (p. 24).


Thanks to all, folks !
It's really great to get help in minutes !

[David Lindquist]

And for what it's worth, my Kodak Publication J-1, 6th edition, 1963, first 1965 printing gives the following "Keeping properties without use":

Full stoppered bottle: 6 months
Half-full stoppered bottle: 2 months
Tray: 24 hours
Gallon tank: 1 month
This is for storage at 65-70º F, higher storage temperatures will give shorter life. And "The figures given in this table are estimates based on experience and are intended for use only as a guide."

This is on page 30 of my edition of Kodak Professional Data Book J-1, Processing Chemicals and Formulas for Black-and-White Photography

BTW Michael R., thank you for citing your source, guessing we have different editions as our page numbers differ.

David

[Michael R]

Thanks. The one I have is from 1977.


And for what it's worth, my Kodak Publication J-1, 6th edition, 1963, first 1965 printing gives the following "Keeping properties without use":

Full stoppered bottle: 6 months
Half-full stoppered bottle: 2 months
Tray: 24 hours
Gallon tank: 1 month
This is for storage at 65-70º F, higher storage temperatures will give shorter life. And "The figures given in this table are estimates based on experience and are intended for use only as a guide."

This is on page 30 of my edition of Kodak Professional Data Book J-1, Processing Chemicals and Formulas for Black-and-White Photography

BTW Michael R., thank you for citing your source, guessing we have different editions as our page numbers differ.

David

[LabRat]

It turns very brown and smells like sour rotten eggs over time... Then it is bad...;)

Steve K

[Kevin Crisp]

I guess I live way out there on the edge.