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Photographers' Formulary

Pyrocat-HD

B&W developer Liquid concentrate In production

Development times

Showing 7 of 7 published times.

Film Dilution EI Temp Time Agitation Source
Ilford HP5+ 1+1+100 400 20.0 °C 20:00 —
Unverified Datasheet Report
Ilford Delta 100 Pro 1+1+100 100 20.0 °C 16:00 —
Unverified Datasheet Report
Ilford Delta 100 Pro 1+1+100 100 20.0 °C 16:00 —
Unverified Datasheet Report
Ilford Delta 100 Pro 1+1+100 100 20.0 °C 16:00 —
Unverified Datasheet Report
Pan 200 /Ultima 200 1+1+100 200 20.0 °C 17:00 —
Verified Datasheet Report
Ultima 100 1+1+100 100 21.0 °C 13:00 —
Verified Datasheet Report
Pan 160 /Ultima 160 1+1+100 160 20.0 °C 21:00 —
Verified Datasheet Report

Reuse

Checked 21 October 2026

The maker’s sheet doesn’t say whether it can be reused.

Dilutions

  • 1+1+100 2 + 100 water

Link to this page

Specification

Type
B&W developer
Form
Liquid concentrate
Capacity rolls per litre
—
Shelf life, unopened
—
Shelf life, opened
—

A dash means the figure has not been read off the maker’s sheet. A guess here would produce wrong answers silently.

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