Using Graded paper vs VC paper

[Nicholas Lindan]

On the subject of these stains are so many publications, that I think, is there not anything that can be added.

I wasn't aware of this information.

Would you be so kind as to post the journal references - I would like to read the articles.

 

[Nicholas Lindan]

... I put oxidized pyrogallol on a glass plate ... It was just filtering like yellow ...

A question just hit - how did you prepare the oxidized pyrogallol?

 

[Jed Freudenthal]

A question just hit - how did you prepare the oxidized pyrogallol?

Pyrogallol in an alkaline environment and air will be oxidized.

And, concerning the information on the stains you could start with:
http://www.largeformatphotography.info/forum/showthread.php?t=22261

As I remember, there are references in this discussion. And contact the people on details, because they made almost any measurement one can imagine, but with more or less sophisticated equipment. As I remember, the wavelength properties and densities of the different stains were investigated, and in one instance the reflection density of the print was measured.

Jed

 

[Nicholas Lindan]

And, concerning the information on the stains you could start with:
http://www.largeformatphotography.info/forum/showthread.php?t=22261

I'd like to quote from that thread:

We're all just weary of the constant bickering...​

Me too.

 

[JBrunner]

I'd like to quote from that thread:

We're all just weary of the constant bickering...​

Me too.

Me too.