Useful Life of Photo Solutions: 



This table is given in terms of the number of 8 X 10 inch sheets which 

 can be processed per gallon of developer without impairment of the quality 

 of the solution. 



Solution 



Developer D- 11 

 Developer D- 19 

 Developer DK-20 

 Developer DK-50 

 Developer D-72 



8"X 10" sheets/gal. 



Developer D-76 

 Acid Fixing Bath F-5 

 Stop Bath SB-1 

 Hardening Bath SB-3 

 Stop Bath SB-5 



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