Test weight is a measurement of bulk density, or weight of a unit volume, of grain (bu/lb). Iowa State University reports that corn test weight values can range from 45 lbs/bu to over 60 lbs/bu.1 The USDA established the standard test weight of a bushel of corn as 56 lb/bu based on 15.5% moisture content. Table 1 lists different test weights of corn needed to equal one bushel of # 2 shelled corn at 15.5% moisture when corn is harvested at various moisture levels.6 For some specialty food corn, test weight is used as an indicator of grain characteristics which are favorable for processing.