Systems and methods for measuring the purity of bales of recyclable materials

摘要

In one embodiment of the present invention, a system includes a radio frequency identification (RFID) reader that is configured to obtain identification information from a plurality of RFID tags respectively attached to the plurality of items. A computer is configured to receive the identification information, and use the identification information to identify the items having a RFID tag attached thereto, and determine a percentage of a desired type of item with respect to the plurality of items.