The temperature of the developer is of the greatest importance.
Close the lamp and flood the exposed strip with the developer.
But even in this he is impelled by the enthusiasm of an experimenter and a developer.
Phenol, better known as carbolic acid, finds a use as a developer.
I imagine he started out as a promoter rather than a developer.
He placed the plate in the tray and turned the developer on it.
Four to six plates can be developed in one lot of developer.
On the other hand, variations are not so easily made in the composition of the developer.
Sometimes the want of opacity is due to the fact that the developer was too cold.
Removing it from the slide, he carefully poured on the developer.