Hey all, just a few questions: What exactly is 'pH'? To my knowledge it is how acidic an ink is or something? What does it mean if an ink is 'pH neutral'? How does the 'pH' level affect my FP? What is the difference between Iron-Gall and Dye-Based inks' 'pH' levels? And lastly; Can IG inks be mixed with standard (dye-based) inks, just something like Diamine or Waterman? I've seen R&K inks can, but I've also seen many posts about Diamine's Registrar's turning cloggy, even if mixed with less than a drop of other ink. Sorry for the "few" questions, but I am still quite a novice. Thanks, Tom.