Quote Originally Posted by Ian Grant View Post
The high level of Sodium Chloride used as a restrainer & silver solvent in Perceptol & Microdold-X greatly reduces the effective film speed.

If I recall correctly there was some debate here on APUG as to whether the formula given in the 'Film Developing Cookbook' as Microdol is correct. Has a Perceptol or Microdol-X type formula actually been published?