Paterson black and white chemistry, designed to offer photographers the optimum quality from modern black and white film and paper, is now back in production. Formulated by Geoffrey Crawley, the liquid chemistry is manufactured to a high standard ensuring longer shelf life and repeatable results. All chemicals are now one litre bottles and one of the best sellers is FX-39 (PAC111).
This one shot high definition developer designed for use with all modern technology films (e.g. Delta & T-Max) and conventional films with speeds up to 200ISO. FX-39 is formulated to allow the highest standard of sharpness and definition for a film to be reached. Its standard dilution is 1+9 which offers short developing time for greater negative control.
A higher dilution of 1+19 can be used as a 'compensating' developer to control high contrast.
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