Originally Posted by shadowfox
That is unbelievable!
Lith developer in working solution expires in a matter of days.
How can a concentrate stay active that long?
And your print is a strong contribution to this thread.
Indeed I was surprised myself. I believe the A & B concentrates themselves are quite neutral and chemically relatively "inactive", only when mixed together they become an "explosive" mix. The Lith-solution dies (oxydizes-) out within a hour or so in my darkroom.
I do use Tetenal Anti-Oxydant spray before I close the concentration bottles - maybe this is also the trick of this longetivity since the Liht bottles were well over half-empty for 6+ years.
Two more from this series: