reikijjb Member Allowing Ads Joined Nov 21, 2012 Messages 1 Format 8x10 Format Nov 21, 2012 #1 Can I add potassium alum to an alkaline film fixer I make up and essentially not change it's alkaline nature? I am trying to avoid scratching negatives. I do not use acid anything in my chemistry. Thanking you in advance.
Can I add potassium alum to an alkaline film fixer I make up and essentially not change it's alkaline nature? I am trying to avoid scratching negatives. I do not use acid anything in my chemistry. Thanking you in advance.
Photo Engineer Subscriber Allowing Ads Joined Apr 19, 2005 Messages 29,018 Location Rochester, NY Format Multi Format Nov 21, 2012 #2 You cannot add Potassium Alum to an alkaline fix. It will form a white precipitate which will ruin the fixer in most cases. PE
You cannot add Potassium Alum to an alkaline fix. It will form a white precipitate which will ruin the fixer in most cases. PE