“…6 The spraying and drying cycles were timed with a stopwatch, and the "start" and "stop" of the spray nozzle were controlled by an on-off switch in series with a Skinner electric valve.6 Ambient conditions were recorded with a Bristol thermo-humidograp h.? By placing a thermocouple and thermistors in the pellet bed and recording the temperature changes during coating, it is possible to discern and control certain events and/or trends taking place during the coating process.…”