[Alt-photo] Re: drop count in pt/pd

Wed Nov 6 19:24:33 UTC 2013

Loris and Christina, thanks for all the information. I am sure it will help me move forward.
Catherine Costolo 

Independent Beauty Consultant with Mary Kay Cosmetics(404) 252 -2181
(404)291-2181 (cell)
Visit my website 24/7 www.marykay.com/ccostolo
Happiness is like jam.....you can't spread it around without getting a little on yourself.

On Nov 6, 2013, at 10:05 AM, Christina Anderson wrote:

> Loris,
> You are absolutely right; I had not decided to "go there" in this discussion. But when I was having all that bleeding a couple years back I was looking at my drop count and realized how much bigger the pd drops were in comparison to the ferric drops. Plus my pd solution (which I made from scratch with pd from Engelhard, now Basf I think) was really rich dark brown compared to other solutions I have looked at since that seem a bit less chocolate and more yellow. I realized that I was maybe wasting metal.
> 
> I filed this in the back of my brain until Mark Nelson and I were talking one day and he brought this up that he uses a 961 mix because of the smaller drop size. 
> 
> It goes against the old books that always talked about putting a couple extra drops of metal in the mix for good measure, so that is also why I didn't mention it, but it really is a waste of metal, I would think.
> 
> I'm not a chemist so I don't know what is happening at the chemical level with too little ferric but the same is true (or maybe it is COMPLETELY unrelated but a similar concept) when I was doing 2  20% FAC to 1 8% potassium ferricyanide in cyanotype and getting grainy results and white specks and bleeding. Since I have gone back to 1:1 those problems are solved. That was courtesy of Alberto Novo.
> 
> You even use about 8 drops more solution than I do for that same coating area, if, in fact, the area was 8.5x11 (not 8x10). I would use 47 but of course that is silly because if I do a 661 it'd be 52, a 961 48.
> 
> Haven't used the pipettes yet, though I have a couple, but I imagine they would be much more accurate than drop counts. I must love counting out those drops :)
> Chris
> 
> 
> Christina Z. Anderson
> http://christinaZanderson.com/
> 
> On Nov 6, 2013, at 2:13 AM, Loris Medici wrote:
> 
>> Hi Catherine,
>> 
>> If possible, measure the amnt. of solution by milliliters using thin
>> syringes with 0.1ml resolution (using separated / dedicated syringes for
>> each solution)... The properties of each solutions differ, consequently
>> their drop sizes also differ (sometimes considerably!), therefore the drop
>> count may not be 100% reliable. (You need equal amounts of iron and noble
>> metal solution for optimum results...)
>> 
>> As for coating volume; my standard is 0.025ml per sq. in., some papers need
>> a little less than that, some a little more. For 8 1/2 x 11" coating area,
>> my standard would translate to ~2.3 - 2.4ml total volume. (Which is around
>> 55-60 drops (of water!) with my cheap plastic pipettes - very close to
>> Christina's count, but only for water and solutions close to water; it's
>> not the same for 25% AFC for instance...)
>> 
>> Regards,
>> Loris.
>> 
>> 
>> 2013/11/6 Catherine Costolo <mikes1mom at comcast.net>
>> 
>>> Bob, I have not been rehumidifying my paper after coating and drying
>>> though the paper is in the room where the humidifier is on. I will try your
>>> suggestion.
>>> Thanks,
>>> Catherine
>>> 
>>> 
>>> Catherine Costolo
>>> Independent Beauty Consultant with Mary Kay Cosmetics(404) 252 -2181
>>> (404)291-2181 (cell)
>>> Visit my website 24/7 www.marykay.com/ccostolo
>>> Happiness is like jam.....you can't spread it around without getting a
>>> little on yourself.
>>> 
>>> 
>>> On Nov 5, 2013, at 8:08 AM, BOB KISS wrote:
>>> 
>>>> DEAR CATHERINE,
>>>> 
>>>>          Reading your e-mail below I didn't notice any mention of
>>>> rehumidifying your paper after coating and drying it.  Whenever I have
>>> had
>>>> lower than normal Dmax it has invariable been because I did not
>>> rehumidify
>>>> my paper right before exposure.
>>>> 
>>>>                      CHEERS!
>>>> 
>>>>                                  BOB
>>>> 
>>>> 
>>>> 
>>>> _____
>>>> 
>>>> From: alt-photo-process-list-bounces at lists.altphotolist.org
>>>> [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On
>>> Behalf Of
>>>> Catherine Costolo
>>>> Sent: Monday, November 04, 2013 4:55 PM
>>>> To: The alternative photographic processes mailing list
>>>> Subject: [Alt-photo] Re: Papers for Palladium
>>>> 
>>>> 
>>>> 
>>>> Thanks to all of you for contributing to this thread!
>>>> My results have been very inconsistent. I received a brand new UV printer
>>>> last summer and it has a built-in vacuum  frame. I have kept the
>>> humidity at
>>>> around 60% and my drop count on a sheet of 81/2 X 11 has been 12, 12, 1 (
>>>> palladium, ferric oxalate, and NA2) On a sheet of 11 X 14 I have used 24,
>>>> 24, 2. I am coating with a Richeson brush and my time is about 6
>>> minutes. I
>>>> have never gotten a dmax greater then 1.30...maybe a few times it has
>>> been a
>>>> bit higher. My developer is Potassium Oxalate and then I was washing in
>>>> Citric acid with EDTA added.
>>>> In August I worked with Jon Cone's PDZN system.
>>>> I have not done any work since August but want to get started again.
>>>> I have posted on my Flicker page two items. One has 5 -21 step grayscale
>>>> linearizations that correspond to 5 of Jon's curves and the other item is
>>>> the same photo printed with 4 different curves from Jon Cone. Maybe you
>>> can
>>>> tell something from looking at them.
>>>> I will appreciate any comments and suggestions.
>>>> The link is:http://www.flickr.com/photos/lasignorina/
>>>> 
>>>> Thanks so much,
>>>> Catherine
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Catherine Costolo
>>>> Independent Beauty Consultant with Mary Kay Cosmetics(404) 252 -2181
>>>> (404)291-2181 (cell)
>>>> Visit my website 24/7 www.marykay.com/ccostolo
>>>> Happiness is like jam.....you can't spread it around without getting a
>>>> little on yourself.
>>>> 
>>>> 
>>>> On Nov 3, 2013, at 8:48 PM, Catherine Costolo wrote:
>>>> 
>>>>> Hi!
>>>>> I have used both Cot 320 and Arches Platine but have not had much
>>> success
>>>> with them. Also I was told that Cot 320 does not give good dmax.
>>>>> Any suggestions for a paper I might try? Has anyone tried the Revere
>>> paper
>>>> from Legion?
>>>>> Thanks.
>>>>> Catherine
>>>>> 
>>>>> 
>>>>> Catherine Costolo
>>>>> Independent Beauty Consultant with Mary Kay Cosmetics(404) 252 -2181
>>>>> (404)291-2181 (cell)
>>>>> Visit my website 24/7 www.marykay.com/ccostolo
>>>>> Happiness is like jam.....you can't spread it around without getting a
>>>> little on yourself.
>>>>> 
>>>>> 
>>>> 
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