Moersch Catechol

I'm using this as a single developer with great results at 1+7 and 10ml of finisher blue. Image came out nicely at around 3.5 minutes for a particular negative last night.

How long is the tray life of this paper developer?

I don't know whether it is oxidisation or developer temperature which has significally changed the development times this afternoon?

Any thoughts?

from the HP of Wolfgang Moersch:

Haltbarkeit Konzentrat 2-3 Jahre, nach Anbruch in Abhängigkeit von der Füllhöhe ca. 1 Jahr
Keeping properties unopened bottle: 2-3 years, after opening depending on amount left ca. 1 year

Haltbarkeit der Arbeitslösung 1-2 Monate
Keeping properties working solution: 1-2 months

Kapazität pro Liter Konzentrat ca. 200 Blatt 24x30cm
capacity per liter concentrate: ca. 200 sh 24x30cm.

1-2 months thanks. That's a long time! The problem must be the temperature if it is not affected by oxidisation.

Cheers.

ath said:

from the HP of Wolfgang Moersch:

Haltbarkeit Konzentrat 2-3 Jahre, nach Anbruch in Abhängigkeit von der Füllhöhe ca. 1 Jahr
Keeping properties unopened bottle: 2-3 years, after opening depending on amount left ca. 1 year

Haltbarkeit der Arbeitslösung 1-2 Monate
Keeping properties working solution: 1-2 months

Kapazität pro Liter Konzentrat ca. 200 Blatt 24x30cm
capacity per liter concentrate: ca. 200 sh 24x30cm.

Click to expand...

I think that the keeping properties mentioned of 1-2 months are based on closed bottles and not in the open air...