HR-DEV

B&W developer Liquid concentrate In production

Development times

Film	Dilution	EI	Temp	Time	Agitation	Source
HR-50	1+49	50	22.0 °C	11:00	—	Verified Datasheet Report
HR-50	1+49	80 push 0.75 stops	22.0 °C	13:00	—	Verified Datasheet Report

Checked 21 October 2026

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

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Written by photographers, under their own profile — so you can see what they shoot before you weigh what they say.