Allows you to more accurately record the processing time and prevent overdevelopment.
Eliminates the contamination of the fixer by the developer residues.
It can be used when processing black-and-white photographic film and paper.
To obtain a working solution, the concentrate is diluted in a ratio of 1:19.
When processing photographic paper, the solution requires 10 - 30 seconds to terminate the action of the developer.
The stop bath contains a dye indicator that changes the color of the solution from yellow-orange to greenish-blue, indicating that the solution needs to be replaced.