CP (Chemically Pure) - Products of purity suitable for use in general
applications.

AR - The standard Mallinckrodt grade of analytical reagents; suitable for
laboratory and general use. If the reagent also meets the requirements of
the American Chemical Society Committee on Analytical Reagent, it will be
denoted as an AR (ACS) reagent. (MBI trademark)

Guaranteed Reagent (GR) - Suitable for use in analytical chemistry, products
meet or exceed American Chemical Society (ACS) requirements where
applicable. (EMD trademark)

  在 condense@smth.org ( 凝聚) 的大作中提到: 】
: 谁介绍一下化学纯、分析纯、优级纯的定义？
: 谢谢！！
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