Harmonized Methods​

AACC International (now Cereals & Grains Association) was formed for the purpose of standardizing analytical grain methods nearly 100 years ago. The International Association for Cereal Science and Technology (ICC) was founded in 1955 and also standardizes methods. Both organizations have developed independent analytical methods and both have rigorous procedures for the approval of new methods and of modifications to existing methods. Together, the organizations have agreed to develop a subset of harmonized methods that are acceptable by any cereals laboratory worldwide for the analysis of key constituents and parameters that are frequently tested on an international basis. The following methods are a result of this agreement and subsequent harmonization among the two organizations’ scientific technical committees. A summary of this harmonization process was published in Cereal Foods World. Cereals & Grains Association and ICC continue to work together in this effort.​


Constituent/ParameterAACC Method Number
Falling Number56 - 81.03
Gluten Index (Mechanical)38 - 12.02
Protein: Kjeldahl46 - 12.01
Protein: Dumas46 - 30.01
Protein: NIRS39 - 10.01
Wet Cluten (Mechanical)38 - 12.02
Zeleny Sedimentation​​56 - 61.02