Re: Iron Blue Bleeding and Staining

From: Richard Knoppow ^lt;[email protected]>
Date: 10/18/05-06:21:46 PM Z
Message-id: <005101c5d443$1a72ddc0$9bf45142@VALUED20606295>

----- Original Message -----
From: "Ryuji Suzuki" <rs@silvergrain.org>
To: "alt-photo list" <alt-photo-process-l@sask.usask.ca>
Sent: Tuesday, October 18, 2005 1:22 PM
Subject: Re: Iron Blue Bleeding and Staining

> Looks like way too much acid.
>
>
> On Tue, 18 Oct 2005 15:36:17 -0400, rhobbs3@aol.com said:
>> I have previously used an iron blue toner withouttoo much
>> staining, most
>> of which cleared in the wash. I was using oldish ferric
>> ammonium
>> citrate, thesame that I use for cyanotype sensitizer.
>> When the old stuff
>> ran out, I got new from photographer's formulary. Now
>> all of a sudden, I
>> have massive color bleeding outof RC paper and staining
>> like crazy. I
>> tried diluting, but no real benefit. Any ideas?
>>
>> formula is:
>> 8g Ferric ammonium citrate
>> 8g potassium ferricyanide
>> 80 ml 99% acetic acid
>> water to make 1 liter.
>>
>> thanks,
>> Rob
>

   Is it possible the Acetic acid is supposed to be 28%
rather than glacial?

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com 
Received on Tue Oct 18 18:22:04 2005

This archive was generated by hypermail 2.1.8 : 11/07/05-09:46:19 AM Z CST