Denise pure Potassium formulas usually clears a lot faster than cadmium emulsion the later has a longer shelf life and some people think clearer/cleaner look. Josef Maria Eder has a book about gelatine (bromide and chloride) emulsions that is part of his Ausführliches Handbuch der Photographie https://ia700306.us.archive.org/14/i...05edergoog.pdf and https://ia600302.us.archive.org/4/it...06edergoog.pdf
unfortunately they are in German but still interesting