The TCF preparator picks the next box in front of the washing area based on the orders defined by the batch paper. In case of bulk goods the stones are directly filled into the washing trays according to the work instruction (number of washing trays that should be used). In case of screened goods the stones are filled into washing grids and then into the washing trays. The remain-ing finished goods packaging is put into the box. The washing trays are put into the washing machine. After washing the wash-ing trays are put into the box with the production order paper. The boxes are placed in front of the applying area. The time used for washing is entered into the PDS (Step: wash, labor and machine time) together with the date and time, the personnel number and production order number.