GB/T 22594-2018Water treatment chemicals - General rules for determination of density (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 22594-2008 "Water treatment reagent - General rules for the determination of density". Compared with GB/T 22594-2008, in addition to the editorial modifications, the main technical changes are as follows: - added U-shape vibrating tube method (see Clause 5). This Standard was proposed by China Petroleum and Chemical Industry Federation. This Standard shall be under the jurisdiction of Subcommittee on Water Treatment Agent of National Technical Committee on Chemistry of Standardization Administration of China (SAC/TC 63/SC 5). The drafting organizations of this Standard. Zhejiang Shuizhiyin Testing Co., Ltd., Guangzhou Special Pressure Equipment Testing Institute, METTLER TOLEDO Instruments (Shanghai) Co., Ltd., Henan Qingshuiyuan Technology Co., Ltd., Shenzhen Junnuo Testing Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Shijiazhuang Zhiyuan Environmental Protection Technology Co., Ltd., China Petroleum & Chemical Corporation Beijing Beihua Institute Yanshan Branch, Tianjin Zhengda Technology Co., Ltd., Chongqing University. Main drafters of this Standard. Yu Minghua, Yin Zongjie, Chen Jianxia, Yang Haixing, Peng Jiana, Bai Ying, Li Yongguang, Fan Dayong, Zhang Quan, Zheng Huaili. Version of standard substituted by this Standard is. - GB/T 22594-2008. Water treatment chemicals - General rules for determination of density

1 Scope

GB/T 22594-2018 is the Chinese national standard on water treatment chemicals - general rules for determination of density, in the field of chemical technology. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 7 June 2018 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 January 2019. Classification: ICS 71.040.40, CCS G76. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This Standard specifies general methods for density determination of water treatment chemicals. This Standard is applicable to the density determination of water treatment chemicals.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 6682, Water for analytical laboratory use - Specification and test methods

3 Densitometer method

3.1 Method summary The density of the liquid is read by the depth at which the densitometer is submerged in the equilibrium state of the sample to be tested.