中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 30921.7-2016
Test method of purified terephthalic acid(PTA) for industrial use—Part 7: Determination of b* value—Color difference meter 工业用精对苯二甲酸(PTA)试验方法 第7部分:b*值的测定 色差计法
Issued Date:2016-06-14
Implemented Date:2017-01-01
Issued by:
The Standardization Administration of the People's Republic of China