Dektol vs D-72

[David Lyga]

I remember reading a time ago that Dektol had a bit more staying power (ie, more capacity) than D-72. Why? Does anyone know (or wish to divulge) whether Dektol deviates from the 3g Metol / 12g HQ per liter which comprises D-72 for stock solution? - David Lyga

 

[Gerald C Koch]

At one time Kodak made a liquid developer that some people erroneously referred to as liquid Dektol. Since it used Dimezone rather than Metol it probably had a greater capacity. Perhaps that is what you are thinking about. AFAIK Dektol has been D-72 with the changes for packaging that I mentioned previously.

 

[David Lyga]

Yes, it was Dektol that was supposed to have a bit more capacity. And michael, these developers used to be packaged (decades ago) as two parts: A and B, because, I guess, they did not have that sequestering agent. - David Lyga

 

[Photo Engineer]

Developers are packed in 2 parts due to the fact that both parts interact. Discovering how to avoid that problem allows a single pack developer. Versatol was a single part liquid developer. I liked it, but it was discontinued. I guess HC110 is the best replacement.

D72 and Dektol are virtually identical except as previously described above.

PE

 

[markbau]

In David Vestal's classic book, Art of Black & White enlarging he opined that D 72 lasted longer in the tray for him. I've never mixed D72 but I know that Dektol and Bromophen are indistinguishable as far as I can see.