On February 21, 2019 the U.S Federal Grain Insepction Service (FGIS) announced that it will implement a new barometric pressure correction and require the use of the Perten Shakematic for the determination of falling number (FN) for wheat grain to reduce overall variation of test results within the official inspection system. These new testing parameters will be implemented  effective May 1, 2019. FGIS will implement this new correction to reduce variation between labs.

A copy of the U.S. FGIS announcement can be found here.