[sanking]

Thanks---that's an interesting test. It would be interesting to see if Azo responds to water bath processing in 130 the way it does in amidol.

BTW, when doing the AZO Amidol vs 130 tests yesterday I also tested both Amidol and 130 to see if dilution affects contrast. The answer is basicaly no for both developers. There was virtually no differnce in contrast between AZO when developed in both Amidol and 130 straight, diluted 1:1 and diluted 1:2.

Different dilutions do result in curves that are slighly different in terms of both toe and shoulder, however. The most straight line cuve with 130 was obtained with the 1:1 dilution, whereas the most straight line curve with Amidol was obtained with the 1:2 dilution.

I later tested 130 with water bath development, with the following scenario: a) 2.0 minutes in developer, 1.0 minutes in water bath, b) 1.5 minutes in developer, 1.5 minutes in water bath, and c) 1.0 minutes in developer, 2.0 minutes in water bath. The water bath resulted in a change of speed but no change at all in exposure scale, which was 1.45 for all three situations described above.


Sandy