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Kodak Rapid Fixer storage life.

Reply from: Jean-David Beyer
Date: 06 Jun 2008, 03:06
Kodak Rapid Fixer storage life.

I was wondering about buying a cubitainer of part A of Kodak Rapid Fixer
instead of mixing F-9 fixer all the time. But sometimes I do not use it very
fast, so perhaps I should get the smaller size.

How long does the stuff last, unmixed, in the cubitainer? I have great
difficulty finding this information on Kodak's web site. They tell me the
lifetime of working solutions in an old J-1, but that is not available
anymore, and it does not tell me what I want to know.

--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ PGP-Key: 9A2FC99A Registered Machine 241939.
/( )\ Shrewsbury, New Jersey http :// counter.li.org
^^-^^ 21:00:01 up 14 days, 10:57, 3 users, load average: 4.30, 4.38, 4.21

Reply from: Nicholas O. Lindan
Date: 06 Jun 2008, 04:53
Re: Kodak Rapid Fixer storage life.

FWIW: I use Arista rapid fixer and a 1 gallon jug lasts about
1 1/2 years before the (now) mostly empty jug starts to throw
yellow sulfur. It might last longer in the 'fridge, but I
have never tried keeping it there. TTBOMK, most all modern
"Rapid" fixers are ~60% ammonium thiosulfate with a pixie
dust of hardeners and acidifiers/buffers.

At the time I investigated Arista was the cheapest fixer
available. I don't think there is any advantage to spending
extra money for boutique fixer.

--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
http :// www .darkroomautomation,com /index2.htm
n o lindan at ix dot netcom dot com



Reply from: Ken Hart
Date: 06 Jun 2008, 05:18
Re: Kodak Rapid Fixer storage life.


"Nicholas O. Lindan" <see@sig,com > wrote in message
news:rtCdnf7pMunfBdXVnZ2dnUVZ_vGdnZ2d@earthlink,com ...
> FWIW: I use Arista rapid fixer and a 1 gallon jug lasts about
> 1 1/2 years before the (now) mostly empty jug starts to throw
> yellow sulfur. It might last longer in the 'fridge, but I
> have never tried keeping it there. TTBOMK, most all modern
> "Rapid" fixers are ~60% ammonium thiosulfate with a pixie
> dust of hardeners and acidifiers/buffers.
>
> At the time I investigated Arista was the cheapest fixer
> available. I don't think there is any advantage to spending
> extra money for boutique fixer.
>


Years ago I had a darkroom in the garage (an outbuilding) that was only
heated when I wanted to use it. The fixer settled out in a sort of 'angel
hair' formation. Although this was probably the garden variety Kodak mix
from a powder variety. I stand ready to be chastised for this comment!

In recent years, I've gone to B&W chems that come in concentrate form and
can be mixed as needed.



Reply from: dan.c.quinn@att,net
Date: 11 Jun 2008, 01:09
Re: Kodak Rapid Fixer storage life.

On Jun 5, 6:06 pm, Jean-David Beyer wrote:
> I was wondering about buying a cubitainer of part A of Kodak Rapid Fixer
> instead of mixing F-9 fixer all the time. But sometimes I do not use it very
> fast, so perhaps I should get the smaller size.
>
> How long does the stuff last, unmixed, in the cubitainer? I have great
> difficulty finding this information on Kodak's web site. They tell me the
> lifetime of working solutions in an old J-1, but that is not available
> anymore, and it does not tell me what I want to know.
>

I use a dry concentrate, sodium thiosulfate. It has unlimited life
span.
Used unadulterated, a quick to mix fresh fix at time of use, film or
paper. Use it very dilute one-shot for archival results with one
fix, film or paper. Dan


Reply from: Jean-David Beyer
Date: 11 Jun 2008, 01:51
Re: Kodak Rapid Fixer storage life.

dan.c.quinn@att,net wrote:
> On Jun 5, 6:06 pm, Jean-David Beyer wrote:
>> I was wondering about buying a cubitainer of part A of Kodak Rapid Fixer
>> instead of mixing F-9 fixer all the time. But sometimes I do not use it very
>> fast, so perhaps I should get the smaller size.
>>
>> How long does the stuff last, unmixed, in the cubitainer? I have great
>> difficulty finding this information on Kodak's web site. They tell me the
>> lifetime of working solutions in an old J-1, but that is not available
>> anymore, and it does not tell me what I want to know.
>>
>
> I use a dry concentrate, sodium thiosulfate. It has unlimited life
> span.
> Used unadulterated, a quick to mix fresh fix at time of use, film or
> paper. Use it very dilute one-shot for archival results with one
> fix, film or paper. Dan
>

I know, but for TMax films, I find F6 fixer is too slow and difficult to
achieve complete fixing. Kodak recommend Repid Fixer. I have mixed up F9
fixer in the past, but I am not sure how good my 100# drum of sodium
thiosulfate is now that the garage roof sprung a leak and got water all over
the drum (cardboard). I have a new roof now, but I do not really want to mix
the stuff as F9 is not as fast as Rapid Fixer is said to be.

--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ PGP-Key: 9A2FC99A Registered Machine 241939.
/( )\ Shrewsbury, New Jersey http :// counter.li.org
^^-^^ 19:45:01 up 22 min, 4 users, load average: 5.10, 4.47, 3.25

Reply from: Howard Bingham
Date: 12 Jun 2008, 07:41
Re: Kodak Rapid Fixer storage life.

On Fri, 06 Jun 2008 01:06:52 GMT, Jean-David Beyer
<jeandavid8@verizon,net > wrote:

>I was wondering about buying a cubitainer of part A of Kodak Rapid Fixer
>instead of mixing F-9 fixer all the time. But sometimes I do not use it very
>fast, so perhaps I should get the smaller size.
>
>How long does the stuff last, unmixed, in the cubitainer? I have great
>difficulty finding this information on Kodak's web site. They tell me the
>lifetime of working solutions in an old J-1, but that is not available
>anymore, and it does not tell me what I want to know.
--

Should last at least 5 years IF a hose with clamp or spigot were used
when the containers was first opened & any air evacuated from the cube
that may have gotten it at the time it was opened..

Just be sure the date of manufacture is recent (There should be a four
digit code indicating the year & week of manufacture on the side of
the container or box.).

This per experience when I was still active in photo finishing trade.

Fixer will keep for a long time in sealed containers, air is the enemy
of all photographic chemicals..

Howard Bingham

--




Reply from: weiwei
Date: 15 Jun 2008, 15:22
Re: Kodak Rapid Fixer storage life.


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