Hi everyone:
I am trying to mix Pyrocat-HD. There is one thing which is not clear to me after reading dozens of posts from different sources. Nothing seems to confirm or deny it...
Do I need Sodium Bisulfite, or Sodium Metabisulfite is sufficient?
I have read an article in unblinkingeye <http://unblinkingeye.com/Articles/Pyrocat/pyrocat.html> as well as a link <http://silvergrain.org/Photo-Tech/chemistry-misnomers.html> from there which discusses the nature of two chemicals in detail. According to it, there is no practical difference in photographic use EXCEPT "in some sensitive developers, this may make sizable difference in pH."
So my next logical question is:
Is Pyrocat-HD a sensitive developer which pH is very critical?
If anyone with experience in this process is kind enough to confirm or deny it definitely, I would be very happy. Thank you in advance.
Warmly,
tsuyoshi
I am trying to mix Pyrocat-HD. There is one thing which is not clear to me after reading dozens of posts from different sources. Nothing seems to confirm or deny it...
Do I need Sodium Bisulfite, or Sodium Metabisulfite is sufficient?
I have read an article in unblinkingeye <http://unblinkingeye.com/Articles/Pyrocat/pyrocat.html> as well as a link <http://silvergrain.org/Photo-Tech/chemistry-misnomers.html> from there which discusses the nature of two chemicals in detail. According to it, there is no practical difference in photographic use EXCEPT "in some sensitive developers, this may make sizable difference in pH."
So my next logical question is:
Is Pyrocat-HD a sensitive developer which pH is very critical?
If anyone with experience in this process is kind enough to confirm or deny it definitely, I would be very happy. Thank you in advance.
Warmly,
tsuyoshi