Agfa/Ansco/GAF 81 Reprolith Developer

[Tom Hoskinson]

Tom Hoskinson submitted a new resource:

(there was a url link here which no longer exists) - Agfa/Ansco/GAF 81 Reprolith Developer

SOURCE: AGFA FORMULAS FOR PHOTOGRAPHIC USE
Published 1939 by Agfa Ansco Corporation, Binghampton, N.Y.

Agfa/Ansco/GAF 81 Long Life Reprolith Developer, (can also be used as a Lith Paper Developer)

Water (125F/52C)-----------------------750ml
Hydroquinone----------------------------35 grams
Sodium Sulfite (anhydrous)---------------55 grams
Sodium Carbonate (mono)----------------80 grams
Citric Acid-------------------------------5.5 grams
Potassium Bromide-----------------------10...

(there was a url link here which no longer exists)

 

[karavelov]

FOR ONE-SHOT DEVELOPMENT OF LITH PAPER: Dilute 1 part developer with 4 parts water as a starting point. Develop 2 - 3 minutes at 68F/20C.

My experience with lith-printing shows that it work better when diluted more. My standard dilution are 1+15 - 1+25. This gives the sulfite level below 5g/l that is needed for infections development to begin.

 

[psvensson]

My experience with lith-printing shows that it work better when diluted more. My standard dilution are 1+15 - 1+25. This gives the sulfite level below 5g/l that is needed for infections development to begin.

I agree - I tried a similar developer and found no infectious development at lower dilutions. At higher dilutions, it probably oxidizes quickly, since it contains no buffer of sulfite bound with formaldehyde.

Compare to this (there was a url link here which no longer exists)

 

[sun of sand]

Anyone know if this is the same as Paralith? Heard of Rerodol? I can't seem to find these two lith developers. Reprodol is A/B and Paralith is single solution

 

[Ian Grant]

This is yet another case were the German Agfa 81 developer MQ formula differs considerably from the Agfa-Ansco 81.