We manufacture tablets and capsules in our facility. For the past few decades, we've been using run charts with spec limits as our monitoring tool for tablet/capsule weights. Contrary to popular belief-100% online inspection isn't available for this operation. We're planning on shifting over to use SPC. Here lies the problem; the operators who use the tablet presses must frequently adjust the pressure, speed, and fill cams to compensate for the product flow going into the presses amongst other things. I'm positive that some of these adjustments are unnecessary but I'm assuming that some of them are. With all the operator adjustments, can we even implement SPC in faith? What would you do? My first reaction is that this is an uncontrolled process and it can't be done.