View Single Post

Old 03-28-2013   #24
Registered User
tsiklonaut's Avatar
tsiklonaut is offline
Join Date: Dec 2012
Location: Estonia
Posts: 1,062
Originally Posted by shadowfox View Post
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.
Thank you!

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:

Take care,
  Reply With Quote