[alt-photo] Re: Substitute for citric acid

[Loris Medici]

Apart 7Up (which will definitely work), you may try to source
*disodium* EDTA or phosphoric acid. You need an acidic "iron
chelator", not just any mild acid...

Good luck!


On 21 Ara 2011, at 18:41, Trevor Cunningham <trevor at chalkjockeys.com> wrote:

> that's what i was wondering...i can get loads of that for nothing...i'm assuming the clearing bath is simply a weak acid solution...perhaps lemon juice is another possibility...chemistry was never my subject in school
>
>
> On 12/21/11 7:31 PM, Mark Nelson wrote:
>> White vinegar?
>>
>> Mark Nelson
>> www.PrecisionDigitalNegatives.com
>> PDNPRint Forum @ Yahoo Groups
>> www.MarkINelsonPhoto.com
>>
>> sent from my iPhonetypeDeviceThingy
>>
>> On Dec 21, 2011, at 9:28 AM, Trevor Cunningham<trevor at chalkjockeys.com>  wrote:
>>
>>> Looking into Kallitype. A clearing agent calls for a 3% citric acid solution. Is acetic too weak/strong for a substitute? Recommendations? My local chem supplier is out of citric acid.
>>>
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