Tone D
Tone D—Brown (Uranium)
Positive Employed—Normal
The toning formula employed and the instructions to be followed are the same as for Tone B, the time of toning being about 3 minutes at 65 degrees to 70 degrees F.
Tone D—Brown (Uranium)
Positive Employed—Normal
The toning formula employed and the instructions to be followed are the same as for Tone B, the time of toning being about 3 minutes at 65 degrees to 70 degrees F.