Concentrated long lasting paper developer formula

[ruilourosa]

Hello
Does anyone know any formula of this type?
With the qualities around dektol or ilford multigrade...

Thanks!!!

 

[ruilourosa]

I would much prefer a known formula as i have acess to raw chemistry and cost os also an issue...

 

[KPA40]

I would take a look at the concentrated formula for Ilford ID-62 on Ian Grant's site. There are other concentrated developers there as well.

http://lostlabours.co.uk/photography/formulae/formulae.htm

Olaf

 

[ruilourosa]

in id-62 type developer could i substitute potassium carbonate (more soluble but more expensive) for some some sodium carbonate plus hidroxide?
This without altering stock and tray longevity and activity?

 

[KPA40]

I would try the standard sodium carbonate version first to see if the developer suits you. I have always used it up within four months (stored in high-filled ½ litre bottles). If all works well, you can always use the more concentrated form next time.
If you do want to buy a ready-made developer, I would recommend ADOX Adotol-Konstant, which is known for its durability.
Moreover, it is very cheap

https://www.fotoimpex.com/chemistry/adox-adotol-konstant-paper-developer-to-mix-5000-ml.html

Olaf

 

[ruilourosa]

Id 62 is very long lasting as is d-72 but i would really like to have a long lasting concentrated Dev... 1+9 would bem great!

 

[Raghu Kuvempunagar]

in id-62 type developer could i substitute potassium carbonate (more soluble but more expensive) for some some sodium carbonate plus hidroxide?
This without altering stock and tray longevity and activity?

You can turn ID-62 into a two part formula easily where the first part is glycol based and the second part is mixed as per need. No need for any Potassium salts. First part contains only Phenidone and Hydroquinone and is long lasting.

 

[markbau]

I find Ansco 130 to be very long lasting, I often use it over two print sessions. It is every bit as good as D 72/Dektol. A word of warning though, Glycin seems to go off quicker than most chemicals, I keep it in the fridge. Unless buying it from the Formulary you never know how long it has sat around.

 

[ruilourosa]

You can turn ID-62 into a two part formula easily where the first part is glycol based and the second part is mixed as per need. No need for any Potassium salts. First part contains only Phenidone and Hydroquinone and is long lasting.

Not very convenient... Its for school use and i want to mimic the convenience of 1+9 and economy...

 

[ruilourosa]

Like multigrade or pq universal...

 

[Alan Johnson]

Here is a review by Ryuji:
https://web.archive.org/web/2008093...grain.com/labs/Print_Developer_Recommendation

 

[ruilourosa]

Here is a review by Ryuji:
https://web.archive.org/web/2008093...grain.com/labs/Print_Developer_Recommendation

Good reading! And tbe substitution of hidroquinone for ascorbate was already thought... But concentration is still an issue...

 

[Alan Johnson]

I would much prefer a known formula as i have acess to raw chemistry and cost os also an issue...

I don't think there is a known formula with higher concentrations than that listed on Ian's site though it is theoretically possible to make one.

 

[ruilourosa]

There is... Id 62 could go into solution more concentrated to be diluted 1+9 but using potassium carbonate and hidroxide because sodium carbonate is not so soluble... Im trying to use sodium carbonate not potassium...

 

[john_s]

ID-78 can be made 3x standard strength using potassium carbonate instead of sodium carbonate without any other changes such as Ian Grant's use of sodium hydroxide to replace some carbonate. So normal working solution is now 1+5. I use Dimezone-S which might make dissolution easier.

It's supposed to be a warm tone developer but the effect is extremely subtle.

Ian Grant has a mod that would give you 1+9. See http://www.lostlabours.co.uk/photography/formulae/formulae.htm

 

[john_s]

You could use sodium carbonate and still do some modification using hydroxide as in Ian Grant's formula. You might get to 1+6 (guess) or better.

 

[Alan Johnson]

There is... Id 62 could go into solution more concentrated to be diluted 1+9 but using potassium carbonate and hidroxide because sodium carbonate is not so soluble... Im trying to use sodium carbonate not potassium...

https://pubchem.ncbi.nlm.nih.gov/source/hsdb/5018#section=Solubility-(Complete

If you don't mind a few crystals when it cools down, note that the part B of Pyrocat HD can be 200g/L sodium carbonate:
https://unblinkingeye.com/Articles/PCat/PCat2/pcat2.html

 

[ruilourosa]

200g/liter of sodium carbonate could be put into solution in id 62 or another developer?
What about a fully soluble amount of sodium carbonate plus some amount of hidroxide?

 

[RalphLambrecht]

Hello
Does anyone know any formula of this type?
With the qualities around dektol or ilford multigrade...

Thanks!!!

Sure,the Dektol(D72) formula is public! Just Google it.

 

[subsole]

Opened bottle has a 2 year shelf life:
https://www.moersch-photochemie.de/content/shop/positiv/110/lang:en

 

[RalphLambrecht]

I would take a look at the concentrated formula for Ilford ID-62 on Ian Grant's site. There are other concentrated developers there as well.

http://lostlabours.co.uk/photography/formulae/formulae.htm

Where can ES book be obtained from?
Olaf

 

[ruilourosa]

Sure,the Dektol(D72) formula is public! Just Google it.

D72 is to be diluted normally 1+2, i want to make a stronger concentrate to be diluted 1+9

 

[ruilourosa]

Opened bottle has a 2 year shelf life:
https://www.moersch-photochemie.de/content/shop/positiv/110/lang:en

I want a known formula...

 

[Nikola Dulgiarov]

As others have commented, the Ilford series of published formulas are probably as good as you can get, and have been time-tested by users across the board. ID-78 is an excellent neutral tone developer. In patents, I've come across various modifications, but they start involving compounds like diethylene glycol, etc.
If you want a 1+9 concentrate, it's hard to avoid using potassium salts. I don't think I've ever seen a concentrate for 10x and higher dilutions that uses sodium salts. Many even specify potassium sulfite, whereas Ian Grant's adaptation achieves it using Na2SO3.
Potassium carbonate is not that much more expensive. Considering that a kilogram of it is enough for maybe 50-60 L of working dilution developer, I don't think you should try to avoid it.

Edit: I looked up the formula for ID-78. Increasing the concentration of ingredients 2.5x will give you the 1+9 concentrate. This means you need 155g/L Na2CO3. Perhaps this will actually dissolve OK, but I have never tried this. Ian's formula calls for about 100g/L K2CO3. So a kilo will make 10L of 1+9 concentrate.

 

[Alan Johnson]

The molecular weight of potassium carbonate is 138.2, sodium carbonate is 106.
In the formula for the 1+9 concentrate of ID 62 , 95 grams of potassium carbonate could be replaced by (95 x 106)/ 138.2 = 73 g/L sodium carbonate anh.
http://lostlabours.co.uk/photography/formulae/developers/devID62.htm