Mixing your own: Kodak D-23 Film Developer

Kodak D-23 hasn't been available commercially for years.  Using only two ingredients it is a great compensating B&W film developer with highlight holding ability.  It's super easy to mix this developer yourself.

You'll need:  sodium sulfite and metol.  Both are available online from Adorama or from Photo Formulary.

Start with 750 ml of water at 125 degrees

add 7.5 grams of Metol.  Mix well
add 100 grams of sodium sulfite and mix until dissolved.
add enough water to make 1 liter.

You can find times for many popular film types at the Massive Development Chart

D-23 can be used as a stock solution for 1:1 for one shot use economy and a slightly sharper negative.

Here is an example of Fuji Acros 100 shot with a Yashica 124.  Exposure was 1/4 @ f22.
Developed in D-23 stock solution.