Some Properties of Chrome Alum Stop Baths and Fixing Baths (Part II)

The desirable properties of chrome alum fixing baths are analogous to those of potassium alum fixing baths as outlined in a previous paper.¹ A satisfactory bath should have the following properties: (1) It should fix the film sufficiently rapidly and should have a fairly long fixation life; (2) the bath should harden the film to a sufficient degree and should maintain its hardening properties either with or without use; (3) it should not sulfurize prematurely at temperatures below 85°F.; (4) the propensity of the bath to deposit a sludge on the addition of developer should be a minimum; and (5) there should be a minimum tendency to produce blisters even when used in conjunction with a strongly alkaline developer.

Print ISSN

0097-5834

Published

1930-06

Content type

Original Research

DOI

10.5594/J13053