3-A SSI and EHEDG: Yin & yang

No one ever said 3-A Sanitary Standards Inc. (3-A SSI) and the European Hygienic Engineering and Design Group (EHEDG) guidelines were supposed to be compatible or directly interchangeable in an “apples to apples” sense. In fact, they were conceived at different times, in different parts of the world and with different needs in mind.