Glycin in Dektol??

[Anscojohn]

Has anyone thought about or tried making an ersatz Ansco 130 through the expedient of mixing up some Dektol, then as a last step, mixing in an amount of glycin appropriate to the same quantity of 130? TIA

 

[Thomas Bertilsson]

Got this thread on 'subscribe'. I've been wondering the same thing.
- Thomas

 

[eclarke]

OK, I am going to print this weekend and will do a batch of this to compare to my 130, same negs, same day!!..Evan Clarke

 

[Photo Engineer]

At the same dilution, adding Glycin will boost activity by quite a bit depending on the amount you use. Remember that at 1:3, Dektol is already pretty active for most papers.

PE

 

[Anscojohn]

At the same dilution, adding Glycin will boost activity by quite a bit depending on the amount you use. Remember that at 1:3, Dektol is already pretty active for most papers.

PE

*****
Hi Photoeng,
I was thinking about adding the glycin to the newly mixed Dektol stock; but you are suggesting mixing the proper amount into the working solution, correct? If so, I had not thought of that. Might be a way to go if you think such a Rube-Goldberg solution! as adding glycin to pre-miixed Dektol would work.

 

[dpurdy]

I have commented on this a few times that Ansco 130 without Glycin added looks a lot like Dektol. Dektol has a bit more Metol and a bit more Hydroquinone but 130 has nearly triple the Potassium Bromide. So to make a stock solution of a liter you might add not only the 11 grams Glycin but also 3 grams Potassium Bromide.

 

[Photo Engineer]

*****
Hi Photoeng,
I was thinking about adding the glycin to the newly mixed Dektol stock; but you are suggesting mixing the proper amount into the working solution, correct? If so, I had not thought of that. Might be a way to go if you think such a Rube-Goldberg solution! as adding glycin to pre-miixed Dektol would work.

I think my comment was unclear. Sorry.

You can add the Glycin to either the stock or working solution, but the actual use of it will change activity upwards by quite a bit wherever you add it, and that is probably why Ansco 130 has more bromide.

I might also add that I think the stability would go down, so it is more reasonable to make it a one-shot and add it to the working solution just before use. Adding extra bromide would be necessary as well under the conditions noted above.

Glycin raises the activity of both HQ and Metol. All three is a powerful combination.

PE

 

[Anscojohn]

I have commented on this a few times that Ansco 130 without Glycin added looks a lot like Dektol. Dektol has a bit more Metol and a bit more Hydroquinone but 130 has nearly triple the Potassium Bromide. So to make a stock solution of a liter you might add not only the 11 grams Glycin but also 3 grams Potassium Bromide.

********
Ah, so you think it IS a go!?, Good deal then; now, what about adding benzotriazole instead of bromide?

 

[galyons]

What are you trying to achieve? I guess I do not understand the motivation or desired result. If you want a glycin based paper developer, why not just use one. Sounds like after all of your efforts, in this pursuit, you would wind up with a developer less stable and predictable than either Dektol or Ansco 130.


Cheers,
Geary