The total developer immersion time is listed for the smaller processor. What is the immersion time for the smaller processor?

• A. 10 seconds
• B. 60 seconds
• C. 20 seconds
• D. 90 seconds

Answer: (C)

Total developer immersion time is the duration the film spends in the developer bath. For a smaller processor, the bath volume is reduced and the film has less distance to travel, so development can reach the desired level in a shorter time. The data show 20 seconds for the smaller unit, which provides enough development without overdoing it in a compact bath. Times like 10 seconds would likely underdevelop the image, while 60 or 90 seconds would overdevelop in a small-volume bath, degrading detail and contrast.