[pure-silver] Re: baking soda as wash aid
- From: Christopher Woodhouse <chris.woodhouse@xxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Thu, 17 Feb 2005 20:11:32 +0000
I think we are talking about both. Sea water also can be used to shorten
wash times!
On 17/2/05 8:01 pm, "J.R. Stewart" <jrstewart@xxxxxxxxxxxx> wrote:
> Are we talking washing soda or baking soda?
> Washing soda is sodium carbonate, right?
> Baking soda is sodium bicarbonate.
>
> I have plenty of both around the house as I do a lot of laundry and get a
> lot of gas/heartburn.
>
> Does either work as a wash aid? Do neither work?
>
> I sometimes throw a teaspoon of sodium sulfite into my upright negative
> washer at the start of the laminar flow. I think (hope) it helps as it
> dissolves over several minutes, baths the negatives in sulfite until it
> eventually is removed by the laminar flow.
>
> J.R. Stewart
> Leesburg, VA
>
> ----- Original Message -----
> From: "Christopher Woodhouse" <chris.woodhouse@xxxxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Thursday, February 17, 2005 2:38 PM
> Subject: [pure-silver] Re: baking soda as wash aid
>
>
>> Agfa still recommend Washing Soda on the paper slips in the print boxes.
>> How
>> quaint!
>>
>>
>> On 17/2/05 7:05 pm, "Ryuji Suzuki" <rs@xxxxxxxxxxxxxxx> wrote:
>>
>>> From: "Gene Johnson" <genej2@xxxxxxx>
>>> Subject: [pure-silver] baking soda as wash aid
>>> Date: Thu, 17 Feb 2005 07:40:48 -0800
>>>
>>>> I saw on the Summitek site a suggestion for using Baking soda in the
>>> print wash water as a wash aid. Any thoughts on this? Economical
>>> and low tox if it works well.
>>>
>>> If you wash your prints in pure, deoinized water, addition of
>>> bicarbonate would expedite washing. But I'm not sure if you use tap
>>> water containing some. Levenson did this work in 60s.
>>>
>>> As a conventional wash aid bath (not a washing water additive)
>>> bicarbonate is also effective, but probably not as effective as
>>> sulfite in many conditions. But sulfite bath has short shelf life
>>> unless iron catalysis is poisoned and radical scavenger is added.
>>> Bicarbonate may keep longer as a stock solution.
>>>
>>> After all, I don't see a need to change sulfite wash bath though.
>>>
>>> --
>>> Ryuji Suzuki
>>> "Keep a good head and always carry a light camera."
>>> ============================================================================
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>>
>> --
>> Regards Chris Woodhouse
>>
>>
>>
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>
>
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--
Regards Chris Woodhouse
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