If you are processing multiple sheets at a time, consider carefully Kodak's recommendation for processing time:
Using Full-Strength Developer
Choose the appropriate table for development times and
temperatures for using fresh, full-strength XTOL
Developer. The capacity of the full-strength developer with
normal, unreplenished processing is approximately 15 rolls
of 135-36 or 120 film (or the equivalent of 80 square inches
[516 square centimetres]) per litre, with time
compensation.
To process the maximum number of rolls of film per litre
of full-strength XTOL Developer, use time compensation
according to the table below. Discard the developer after
you process 15 rolls of film per litre.
*80 square inches = one 135-36 or 120 roll, four 4 x 5-inch sheets, or one 8 x
10-inch sheet; 160 square inches = one 220 roll.
STORAGE LIFE OF UNUSED SOLUTIONS
In Full, Tightly
Closed
Container
In Partially Filled,
Tightly Closed
Container
In Replenisher Tank
with Floating Lid
6 months At least 2 months
Indefinitely if new
solution is added to
replaced that used by
the processor
Time Compensation
for KODAK PROFESSIONAL XTOL Developer
Film Size Number of Rolls
(per litre)
Development-Time
Increase
135-36
or 120 rolls
(80 square
inches* or
equivalent)
1 to 5 Use normal
development time
6 to 10
Increase normal
development time by 15
percent
11 to 15
Increase adjusted
development time by 15
percen
I use both expert drums and the 2509N reels for 4x5 and both deliver the same results. However, it takes a little practice to load the 2509N with 6 sheets. What I did was to use 6 discarded negatives and practiced loading the reel in the light paying close attention to how the reel was loaded and how to check that it was inserted correctly. Then in the darkness to verify that I had the procedure down. I found that you must start from the inside slot and work your way out verifying that each sheet was spaced correctly and firmly before proceeding to the next sheet. Also, pay close attention to how to place the wings for circulation correctly and how to check.
Thomas
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