A Product Description Language (PDL) is a set of photographs and definitions used to describe a product. It focuses on the key quality characteristics of a product and describes them in a way that is readily measured. In this way a PDL can be used by growers, packers, processors, wholesalers, exporters and retail customers to identify what quality attributes are important to them. It also gives the opportunity to specify what style of blemish, size, shape, sweetness or other parameter is available to supply or acceptable to purchase. It is also a useful training tool for packing staff.