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Pyrocat-HD Film Developer is a semi-compensating, high-definition developer, formulated by Sandy King as an alternative to PMK. The advantages over PMK that Mr. King cites for his formula include an approximately 1/3-stop greater effective film speed, 10-15% shorter development times, more consistent staining action, lower toxicity, and no streaking or mottling with reduced agitation.



  • Semi-compensating
  • High definition
  • Alternative to Pyro PMK
  • Makes 50 Liters
  • Excellent results for sheet film processing

Formulary Pyrocat HD

  • Black and White Film Developing

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