U of S | Mailing List Archive | alt-photo-process-l | RE: Dilution question

RE: Dilution question

Jon, Potassium Chlorate will become less effective as it breaks down in solution. a small dilution will break down and become less effective. It will be your eye that will judge this, as well as your eye that will deal with any increase in granularity from it's use.  It has been my experience that even small amounts of this can show up very quickly.  Have you just tried warming the developer a little?

 

Eric Neilsen

Eric Neilsen Photography

4101 Commerce Street, Suite 9

Dallas, TX 75226

 

www.ericneilsenphotography.com

skype me with ejprinter

 

From: Jon Reid [mailto:sharperstill@gmail.com] On Behalf Of Jon Reid
Sent: Thursday, September 10, 2009 7:09 PM
To: alt-photo-process-l@usask.ca
Subject: Re: Dilution question

 

It has been recommended to me as I have a print in which my smallest dilution of potassium chlorate is having too great an effect on some delicate highlights.

 

what are you doing about the decay of this compound?

 

I'm not sure what you mean by this?

 

Jon

 

 

 

On 11/09/2009, at 3:59 AM, EJ Photo wrote:



However, the dilution is so small, what are you doing about the decay of this compound? Jon, I am wonder where you are using this (PT/PD) printing presumably. Are you looking to keep the fog threshold up a touch?  

 

Eric Neilsen

Eric Neilsen Photography

4101 Commerce Street, Suite 9

Dallas, TX 75226

 

www.ericneilsenphotography.com

skype me with ejprinter

 

From: sharperstill@gmail.com [mailto:sharperstill@gmail.com] On Behalf Of Jon Reid
Sent: Thursday, September 10, 2009 3:47 AM
To: alt-photo-process-l
Subject: Dilution question

 

Hi list,

Can anyone help me figure out the following dilution? I have a solution that is 10% potassium chlorate. I have in the past diluted this down to 5% and 1% and a 1/2% solutions. I rarely use any and cannot find my notes for making the dilutions.

I now want to make a tiny dilution, like 0.125%, or similar, just so there is a presence of potassium chlorate in the sensitiser. Could someone help me get there from the 10% start?

regards,

Jon

--
http:www.sharperstill.com