Photo Engineer
Subscriber
Yes, Azo fluctuated in speed between the two Kodak plants.
Azo paper, at least the samples I have tested, have a rather high blue speed, but samples I make are much lower in sensitivity to blue light but about the same to UV. Exposure to tungsten light (with some UV) my samples equal Azo or are faster. This inversion in speed is not uncommon between the different "flavors" of the Azo type formulas I have seen.
PE
Azo paper, at least the samples I have tested, have a rather high blue speed, but samples I make are much lower in sensitivity to blue light but about the same to UV. Exposure to tungsten light (with some UV) my samples equal Azo or are faster. This inversion in speed is not uncommon between the different "flavors" of the Azo type formulas I have seen.
PE