-test paddy input capacity . the total mass of test paddy for each trial run shall be determined from its actual mass flow rate into the mill. the test paddy shall be fed into the rice mill hopper at the rate specified by the manufacturer during the test performance trials . recording of milling time shall start when milling operation has stabilized and at least one hopper capacity residence time has elapsed. the gate valve of the paddy hopper is opened and is stopped when all of the paddy has been emptied from the hopper