Final moisture is only one point in a larger process window. The useful design basis connects incoming variability, equilibrium behavior, residence time, particle integrity, and the measurement method used at release.
Start with the boundary conditions
Document the credible range of inlet moisture, temperature, bulk density, particle size, solvent content, and feed rate. Averages hide the conditions that usually constrain a production dryer.
Separate product limit from control target
A release limit is not automatically the best control target. The operating target needs enough margin for sampling, analyzer uncertainty, and downstream exposure while avoiding unnecessary energy and residence time.
Scale-up evidence should show how the full material window moves through the intended endpoint, not only that one successful batch can be made.
Use trials to reduce the right uncertainty
Trials are most valuable when they answer a defined scale-up question: heat-transfer sensitivity, fluidization stability, solvent release, agglomeration, attrition, or endpoint detection.