Photographers' Formulary PyroCat-HD Film Developer - Makes 10 Liter  (2.6 gal)

Photographers' Formulary PyroCat-HD Film Developer (Liquid) - Makes 10 Liter (2.6 gal)

Photographers' Formulary PyroCat-HD Film Developer (Liquid) - Makes 10 Liter (2.6 gal)

B&H # PHPHDFDL10L MFR # 01-5081
Photographers' Formulary PyroCat-HD Film Developer - Makes 10 Liter  (2.6 gal)

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  • 1Description

Photographer's Formulary PyroCat HD is a high acutance developer, formulated by Sandy King as an alternative to other pyrogallol-based staining developers.

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.

Catechol (pyrocatechin) has a high vapor pressure and it is a phenol. The high vapor pressure means that solid catechol evaporates readily. When you open a bottle containing solid catechol, you can smell it. Always store solid catechol in a tightly capped glass container. When mixing a solution containing catechol, work in a ventilated area. When catechol is in solution, its high vapor pressure is not a problem.

UPC: 675152150813
In the Box
Photographers' Formulary PyroCat-HD Film Developer (Liquid) - Makes 10 Liter (2.6 gal)
  • 0.75 lb
  • Table of Contents
    • 1Description
    Chemistry Type Film Developer
    Powder/Liquid Liquid
    Liquid Volume Not Specified by Manufacturer
    Packaging Infofrqxyatezq
    Package Weight 0.7 lb
    Box Dimensions (LxWxH) 5.5 x 5.0 x 2.5"
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