d23 keeping properties

[RalphLambrecht]

who has 1st-hand experience and is willing toshare?how long does the stock solution lsst in a plastic bottle at ambient?

[PhotoJim]

I haven't thoroughly tested, but I'd expect its shelf life should be similar to that of D-76.

Bear in mind, you're mixing up stock solution from bulk ingredients, so there is no reason to make more of it than you can use in a reasonable amount of time.

[Gerald C Koch]

Probably a bit better than D-76 as the pH is slightly less. Shelf life also depends on the type of plastic bottle.

[Ronald Moravec]

Six months easy in glass or plastic with air tight internal membrane.

I gave up plastic stuff decades ago and most all the issues with dirty negs went away. It cleans. You can see if it is clean.

Waterfilter and air filter and a clean darkroom will finish the job.