ARS-IMAGO MB MONOBATH is a highly concentrated all-in-one developer for black and white films. The solution develops and fixes at the same time with only one bath. The negatives have medium-high contrast with a good and balanced tone scale.

Mix Part A with Part B to prepare the working solution which can be reused several times in two weeks. The stock solution can be also diluted 1:1 and used as one shot developer.

The best results are achived with standard cubic-grain films like lford Hp5 and Fp4, Kodak Tri-x, Rollei RPX, Fomapan or Kentmere. The use with T-Grain films like Ilford Delta or Kodak T-Max is not recommended.

ars-imago MB Monobath is an easy, fast and efficient solution to develop and fix black and white films at the same time with only one chemical bath.

© Paolo Del Signore

PREPARATION and DEVELOPING TIME

Stock A+B: Mix Part A and Part B 1+1 to obtain the working stock solution. It can be reused more times in two weeks (guaranteed).
The suggested developing time is 8 minutes with standard agitation of 10 seconds every minute.

Diluted 2+1+1: Mix the stock solution with the same quantity of water to obtain a diluted solution 1+1 (2 parts of water, 1 part A and 1 part B). It has to be used as one shot developer and discarded afterwards.
The suggested developing time is 10 minutes with standard agitation of 10 seconds every minute.

After the development rinse the film for at least 10 minutes.

TEMPERATURE: The temperature doesn't influence a lot the development but it has to be between 20° and 25°.

AGITATION: Continuous for the first 30 seconds, then 10 seconds every minute.

CAPACITY/DURATION: The developer is guaranteed up to 15 films with the stock solution used within two weeks. Probably the capacity and the duration are greater.
The diluted solution is a single use developer, discard after the process.

Datasheet (pdf)