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Glycin anyone?


Edwal 102 to make 1 liter. 80, 120, 25, and 3. Those in
the above listed order. Dan
 
dancqu said:
Edwal 102 to make 1 liter. 80, 120, 25, and 3. Those in
the above listed order. Dan
Click to expand...

So it's not just a wierd quirk. The TSP is for the alkali component? How does it's activity compare to the standard chemicals?
 
TSP by itself produces a slightly higher pH than sodium carbonate - it's a stronger alkalai, but not as strong as sodium hydroxide. That will usually produce a more vigorous and more contrasty developer, although the contrast is affected by dilution. Mixed with disodium monohydrogen phosphate, TSP can make a very effective buffer in the sodium carbonate range of alkalinity. One reason that TSP has not been used in developers is that it reacts with the alum hardeners in hardening fixers to form an aluminum phosphate sludge that clings to the emulsion. With a non-hardening fixer, it works fine. Another problem is that TSP comes in a number of different hydrated forms, and it can be difficult to figure out the molecular weight for what you have unless it is specifically stated nthe label.
 

Where and when goes in the hydroquinone?
BTW, with TEA at near 5% is that a gloves
or tongs only developer? Dan
 
glbeas said:
So it's not just a wierd quirk. The TSP is for the
alkali component? How does it's activity compare
to the standard chemicals?
Click to expand...

TSP is very alkaline but not so much more than
sodium carbonate; 11.8 vs 11.2 after a quick check.
So a more active developer is to be expected using
TSP. My guess, sodium carbonate will do just as
well with somewhat extended times.

Glycine is similar to hydroquinone; the two of them
needing a high ph environment to be active. I've never
seen a glycine developer with any less than a
carbonate as activator.

Glycine though does not appear to be selective
as is hydroquinone. Once activated it behaves as
does metol. In fact I recall it being referred to
as a high ph metol. Dan
 

Well, this got lost!!! Sorry to be so tardy. What I have is in an Excel spreadsheet -- how do I attach or post this?

Thanks!

Ed
 
dancqu said:
...Glycine is similar to hydroquinone; ...
Click to expand...

Dangerous spelling alert: "Glycine" is an amino acid that won't do anything in a developer.
The developing agent is "Glycin" without the "e"!
 
Glycine is a nonpolar amino acid. CAS # 56-40-6
Glycine is an inhibitory neurotransmitter in the CNS

Photographic Glycin CAS # 122-87-2 (p-hydroxyphenylglycin)

Neblette describes photographic Glycin as "a slow, powerful developer which keeps well in solution." Glycin works well in combination with Metol and Hydroquinone.
 
Tom Hoskinson said:
Glycine is a nonpolar amino acid. CAS # 56-40-6
Glycine is an inhibitory neurotransmitter in the CNS
Photographic Glycin CAS # 122-87-2 (p-hydroxyphenylglycin)
Click to expand...

I thought it more English that e added. Wouldn't
you say? I mean what with all those lime'es tuned in.
Make them feel at home.

BTW, how about that post and question,
where is the hydroquinone? #30 this thread.
Your A. Adams TEA A&B 130 has no
hydroquinone. Dan
 
juan said:
The Adams version of 130 has no hydroquinone - that's his variation.
juan
Click to expand...

I though he (AA) used a 'Part B" hydroquione and sodium sulfite solution adding to the tray solution at will, as needed.
 
Tom Hoskinson said:
My Ansel Adams 130 Variation source: The Print, Ansel Adams, p.191

Also, take a look at: http://www.jackspcs.com/pd130a.htm
Click to expand...

I refer to Jack's pages a lot.
In the link you refer to headed Print Developer 130 Adams Version; in the first paragraph it states "Hydroquione solution may be added as required". This is from Adams version as stated by Jack.

Further down the page of Adams version is a recipe for the hydroquione solution.

I am assuming that which is attributed to Adams' Version is in fact Adams. Could be wrong. I do not have a copy of The Print.
 
That's right, Bruce. The basic Adams variation has no hydroquinone. If you need it, you can add it, but the basic formula, and thus Tom's, don't have it.
juan
 
Bruce (Camclicker) said:
I though he (AA) used a 'Part B" hydroquione and sodium sulfite solution adding to the tray solution at will, as needed.
Click to expand...

Hi Bruce,
I also have "The Print". The way I read it is his Ansco 130 variation without hydroquione is one developer formula. The hydroquione solution is a separate developer that he would optionally add to the working solution to increase contrast, but he didn't necessarily need to add it.

Dan
 

That split Ansco 130 has an Ansco 120 complement. The latter
is the same as Beer's A. Beer's A, Ansco 120, is metol only and
Beer's B hydroquinone only. The A and B in varying proportions
vary the contrast. Really works and not so subtly.
I've used it. VC your Graded Paper. Dan
 

Tom,
I am interested in trying your Ansco 130 Variant.
But I'am not sure wich dilution to use?
Can you explain this and how do you mixed up the A Solution. Do I warm up the TEA to 38°C and then pour in the chems. incl. a pince of S.Sulfite before dissolving the Metol?
Thanks.
 
Toms Ansco 130 Variant


Hi Harry!

Suggested Working solution: 50 ml A + 250 ml B + 700 ml water

To mix the A solution I warmed the TEA to 38°C, poured in the dry chems and mixed with a magnetic stirring mixer until everything was dissolved.

DO NOT put sodium sulfite into the A solution! - - no benefit, and it would be difficult to dissolve. If you want MORE sodium sulfite in the mix, put some more in the B solution.
 
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My Corning magnetic, heated stirrer may be the best piece of photo equipment I have bought in the last couple years...EC
 
eclarke said:
My Corning magnetic, heated stirrer may be the best piece of photo equipment I have bought in the last couple years...EC
Click to expand...

I'm very fond of mine, EC!
 
eclarke said:
My Corning magnetic, heated stirrer may be the best piece of photo equipment I have bought in the last couple years...EC
Click to expand...

seconded - or is that "thirded"?

Anyway, there is no better investment for an experimentally minded darkroom worker than a magnetic stirrer. Add heat (thermostat controlled of course) and it's a sure winner. I can't even remember how I got those D76 dry packs to dissolve before, but I'm sure it must have been extremely boring.
 
And where does one get a magnetic stirrer? Sounds like it's well worth a purchase.
 
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