Reagent A.C.S. ：ACS級(jí)試劑 This designates a high quality chemical for laboratory use. The
abbreviation"A.C.S.," means the chemical meets the specifications of
the American Chemical Society. A Certificate of Analysis is available upon
request. ACS級(jí)試劑具有很高的化學(xué)程度，符合美國化學(xué)會(huì)的要求。可以獲得COA
Guaranteed Reagent
(GR)：可以用在分析化學(xué) Suitable for use in
analytical chemistry, products meet or exceed American Chemical Society (ACS)
requirements where applicable. (EMD trademark) 必須達(dá)到，甚至比ACS的要求更嚴(yán)格，具有EMD 商標(biāo)。
AR ：分析級(jí)試劑The standard Mallinckrodt grade of analytical reagents; suitable
for laboratoryand 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) 如果符合ＡＣＳ標(biāo)準(zhǔn)，就會(huì)叫做ＡＣＳ級(jí)試劑。
Primary Standard ：初級(jí)標(biāo)準(zhǔn)品 Analytical reagent of exceptional purity that is specially
manufactured for standardizing volumetric solutions and preparing reference
standards. 非常純的分析級(jí)試劑，專門用來標(biāo)定滴定液，并且用來配制對(duì)照品。
Reagent ：試劑 The highest quality commercially available for this chemical.
The American Chemical Society has not officially set any specifications for
this material. ACS對(duì)“試劑”沒有做出具體的規(guī)定。
OR ： 有機(jī)試劑 Organic reagents that are suitable for research
applications.(MBI trademark) 適用于研發(fā)階段，為MBI商標(biāo)。
Purified ：Defines chemicals of good quality where there are no official
standards. This grade is usually limited to inorganic chemicals. 當(dāng)沒有其他官方標(biāo)準(zhǔn)時(shí)，用purified 來定義試劑的質(zhì)量，通常限于無機(jī)試劑
Practical ： Defines chemicals of good quality where there are no official
standards. Suitable for use in general applications.Practical grade organic
chemicals may contain small amounts of isomers of intermediates. 當(dāng)沒有其他官方標(biāo)準(zhǔn)時(shí)，用practical來定義試劑的質(zhì)量，可能含有中間體的同分異構(gòu)體。
Lab Grade：實(shí)驗(yàn)室級(jí) A line of solvents suitable for histology methods and general
laboratory applications. 一般只適用于組織學(xué)檢查和一般實(shí)驗(yàn)。
USP - Chemicals manufactured
under current Good Manufacturing Practices and which meet the requirements of
the US Pharmacopeia. 在GMP條件下合成的化學(xué)物，并符合USP要求。（標(biāo)準(zhǔn)可是很高的哦）
USP/GenAR - A line of
chemicals manufactured under cGMP, meet the requirements of the 1995 USP 23,
meet European Pharmacopeia (PhEur, EP) and British Pharmacopeia (BP)
specifications where designated, and are Endotoxin (LAL) tested where
appropriate. (MBI trademark)符合三大藥典質(zhì)量標(biāo)準(zhǔn)，并檢測(cè)了內(nèi)毒素。
NF - Chemicals that meet the
requirements of the National Formulary. 符合國家處方集的化學(xué)物。
FCC - Products that meet the
requirements of the Food Chemical Codex. 符合食品化學(xué)藥典的要求。
CP(Chemically Pure) ：化學(xué)純 Products of purity suitable for use in general applications. 通常條件下純度能滿足要求。
Technical ： A grade suitable for general
industrial use. 滿足一般工業(yè)級(jí)要求