Contact your water authority for information on the water in your area. You can take the solution from the developer overflow line or the working tank of an in-control replenished process. Start the timer. In the dark, carefully place the loaded reel into the developer solution. Quickly attach the top to the tank.
Air bubbles can interfere with development and produce low-density circles on the film.
Provide initial agitation of up to 5 cycles, depending on your results. For an invertible tank, one cycle consists of rotating the tank upside down and then back to the upright position. With tanks that have a handle for turning the reel, rotate the reel back and forth gently through about one-half turn at a rate of one cycle per second during initial and subsequent agitation. Steps 2 through 4 will take approximately 7 to 20 seconds, depending on the type of tank. Let the tank sit for the remainder of the first 30 seconds.