COA （全称Certificate of Analysis），成分剖析陈述，一般是对成分各方面功能进行的剖析，通常是针对原材料或制制品的每种成分质料。依据***欧盟化妆品法规EU/EC 1223/2009要求化妆品需求提供产品所含每个成分质料的COA陈述以确保质料的安全性以及作为制品化妆品安全评估的基础。

COA内容一般有：Color,Odor,Assay,Water insoluble matter,Subsidiary colouring matters,Loss on drying,Specific gravity,Decomposition range,Flashpoint,Arsenic,Lead,Mercury,Cadmium,Heavy metals (as Pb),PAHs total,Benzene,Total Phthalate etc.

不同质料成分COA内容不尽相同的，这跟具体成分及其所相关的规范有关的，有些质料成分COA陈述将会包括Purity内容，因而有时有些客户要求提供质料成分纯度证明即PURITY CERTIFICATE，一般提供COA剖析陈述即可。

PURITY CERTIFICATE : Certificates of Analysys shall attest:

- the conformity with the mandatory purity criteria set out by EU Cosmetic Regulation 1223/2009 for that ingredient;

- the absence of any undesired/prohibited substances according to EU Cosmetic Regulation 1223/2009 (e.g. heavy metals,SVHCs, CMRs, substances of Annex II of Cosmetic Regulation, etc.)

- the absence of some dangerous impurities as recommended by the Italian Health Institute (Antimony, Arsenic, Cadmium,Chromium, Nickel, Lead)