Crone:C - D-76 Developer Super Additive.
One ounce of Crone:C Additive converts one quart of negative developer D-76 into C-76, the modern developer for crisp, easy-to-print negatives with generous film speed and ample latitude.
Crone:C is not for use with T-Max developer, or HC-110, FG7, Microdol-X, D-23, Microphen, Acufine, Promicrol or any high contrast graphic arts developer.
Crone:C in capped bottles has a shelf life of over two years.