这些标准涵盖了使用转子和定子组合的内联装置的卫生方面，以实现液体、泥浆和液态气体混合物的混合和尺寸减小。转子-定子混合器从进料管连接处开始，在出口管配件处结束，包括其间的所有设备。为了符合3-A卫生标准，转子-定子直列混合器（以下简称直列混合器）应符合以下设计、材料和制造标准以及本文引用的适用文件。

These standards cover the sanitary aspects of inline devices which use a combination of a rotor and a stator to effect mixing and size reductions for liquids, slurries, and liquid-gas mixtures.The rotor-stator mixer begins at the infeed pipe connection(s) and ends at the exit pipe fitting and includes all equipment in between.In order to conform to the 3-A Sanitary Standards, rotor-stator inline mixers, (referred to hereinafter as inline mixers) shall conform to the following design, material and fabrication criteria and the applicable documents referenced herein.