Completely mixed state

...Industrially, mixing operations that handle materials that are primarily non-viscous fluids (gases and liquids) are called stirring, those that handle highly viscous or plastic material materials are called kneading, and those that handle materials that are primarily solid powders are called solid mixing or simply mixing, but these distinctions are often made strict. A homogeneous mixture (completely mixed) is one in which the proportion (concentration) of a component in a sample taken from any part of the mixture is equal to the proportion (charge concentration) of that component in the entire mixture. In reality, some variation is unavoidable, so mixing is considered complete when the variation in the composition of each component is included in the error function. ...

*Some of the terminology that refers to the "completely mixed state" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…工業的には，粘稠でない流体(気体および液体)を主とする原料を扱う混合操作をかくはん(攪拌)，非常に粘稠なまたは可塑性の物質原料を対象とする場合を捏和（ねつか）といい，固体の粉粒体を主とする原料を扱う場合を固体混合または単に混合と称して区別することが多いが，その区分は厳密なものではない。　均質な混合状態(完全混合状態)とは，混合物の任意個所から採取されたサンプル内の成分割合(濃度)が，混合物全体についてのその成分割合(仕込濃度)に等しい状態をいう。実際には，ある程度のばらつきは不可避であるので，各成分の組成のばらつきが誤差関数にのったとき，混合は完了したものとみなす。…

※「完全混合状態」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報