[pure-silver] Re: One package chemicals
- From: DarkroomMagic <info@xxxxxxxxxxxxxxxx>
- To: PureSilverNew <pure-silver@xxxxxxxxxxxxx>
- Date: Thu, 16 Dec 2004 01:52:28 +0100
I heard Kodak will replace oxidized bags of Dektol. I had one once and
tested the brown vs light new Dektol. The new Dektol had a higher Dmax than
the oxidized version. I discarded the oxidized Dektol.
BTW, I still have very old Dektol in tin cans. So far, they have all been
fine and show no signs of color change.
Regards
Ralph W. Lambrecht
On 12/15/04 11:46 PM, "Curtis Fant" <surrealistic@xxxxxxx> wrote:
> I have used coffee looking dektol before and it works just fine.
>
> Curtis
> ----- Original Message -----
> From: Claudio Bonavolta
> To: pure-silver@xxxxxxxxxxxxx
> Sent: Wednesday, December 15, 2004 4:30 PM
> Subject: [pure-silver] Re: One package chemicals
>
>
> ----- Original Message -----
> From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Tuesday, December 14, 2004 11:15 AM
> Subject: [pure-silver] Re: One package chemicals
>
>
>>
>> ----- Original Message -----
>> From: "Georges Giralt" <georges.giralt@xxxxxxx>
>> To: <pure-silver@xxxxxxxxxxxxx>
>> Sent: Monday, December 13, 2004 11:07 PM
>> Subject: [pure-silver] One package chemicals
>>
>>
>>> Hi !
>>> As I can no longer find my favorite Neutol NE in powder
>>> form, I will mix
>>> my print developer in a more regular basis.
>>> But, weighting the chemicals is a PITA for me (I have to
>>> clean my table
>>> before and after, and vacuum clean the room I use for
>>> weighing chemicals
>>> using my double filter garage vacuum cleaner).
>>> So, As Kodak does for Dektol I plan to make small boxes
>>> containing the
>>> weighted chemical dose for say 5 liters of working
>>> strength dev.
>>> Any pros, cons ? What should I look at ? One package ? Two
>>> ?
>>> All help will be greatly appreciated ;-)
>>> TIA
>>> --
>> Perhaps you can find Neutol Plus. This is a liquid
>> concentrate Phenidone-Ascorbic acid print developer. I've
>> been using it and recommend it. Use the higher dilution, it
>> works fine.
>> As far as packaging chemicals, I don't know what Kodak
>> does so that it can combine all the ingredients of Metol
>> containing developers into one package but they do
>> something. Normally Metol will not dissolve in high
>> concentrations of sulfite so it must be mixed first. This is
>> one reason many developers come in two parts.
>> Have you considered doing the chemical measuring in a box
>> or tent of some sort? This would contain any dust and make
>> cleaning much simpler.
>>
>> ---
>> Richard Knoppow
>> Los Angeles, CA, USA
>> dickburk@xxxxxxxxxxxxx
>
> Salut Georges,
>
> I did once the trial to store powder Dektol in a plastic bottle (the kind for
> dry chemicals) and it
> rapidly and heavily oxidized.
> I kept it, and actual color is close to coffee, I wouldn't waste any paper to
> test it ...
> D-76 in the same kind of bottle remained fine.
> When splitting powder chemicals, particularly non homogenous ones (Dektol is
> of this kind), avoid
> very small quantities as you may have slightly varying mixtures.
>
> Beside the Plus version Richard mentioned, there is also the standard liquid
> version (the same as
> the powder you are used) Neutol NE Liquid (there is also a warmtone version).
> Certainly less environment-friendly than the Plus (it's a classic
> Metol-Hydroquinone mix) but very
> easy to find in France (prophot.fr, nightlight.fr) and really cheap.
> I, too, use it pretty diluted 1+15 (recommended dilutions go from 1+7 to 1+15)
> and throw it after
> the session, dev time is longer (2' for RC, 4' for FB).
> I use the 1.25 liters bottle and add some lighter gaz to prevent oxydation,
> shelf life is long
> enough I've always emptied the bottle much before exhaustion.
>
> Salutations,
> Claudio Bonavolta
> http://www.bonavolta.ch
>
>
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