Livio Vodopivec

Paperdeveloper no 309 CH

For all types of paper. Dilute 1+1 or 1+2. Use at 20° C and develope the photographic paper at least one minute.


Sodiumsulphite (anhyd)

60 g


21,0 g

Phenidon A

1,0 g

Askorbic acid

1,0 g

Sodiumcarbonate (anhyd)

50 g

Bensotriasol 1% solotion

20 ml

Water, to make

1000 ml


Baryta should be developed 2-3 minutes.

RC-paper should be developed 1-2 minutes.

Dissolve the chemicals in order as showed above in 750 ml water at 40°C. Phenidon A is hard to dissolve but you kan add some smale amount off sodiumcarbonate to speed it up.

The stock solotion has very good storing properties.

Mark the botle well and keep out of reach of children.

If you try this formula it would be grateful to get some comments.