R09 Studio

B&W developer Liquid concentrate In production

Development times

Showing 1 of 20 published times.

Film	Dilution	EI	Temp	Time	Agitation	Source
Ortho 25 Plus	1+31 20.0 °C	25	20.0 °C	6:00	—	Verified Datasheet Report

Checked 21 October 2026

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

Capacity, as the maker states it: 135-36: 10-12 films per litre of working solution (15 parts water + 1 part concentrate).

Preparation: 15 Parts Water + 1 Part Conc. = Working solution. Capacity: 135-36 = 10 - 12 Films per liter.

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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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