GB/T 5526-2024Animal and vegetable fats and oils—Determination of relative density (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".

This document replaces GB/T 5526-1985 "Animal and vegetable fats and oils - Determination of relative density". Compared with GB/T 5526-1985, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

- Changed the scope of application of the document (see Chapter 1 of this Edition; Chapter 1 of Edition 1985);

- Added the digital density meter method as Method One (see Chapter 4 of this Edition) and the density meter method as the Method Four (see Chapter 7 of this Edition);

- Added the principle (see 5.1 and 6.1 of this Edition);

- Deleted "reagents" (see 1.2 and 2.2 of Edition 1985);

- Changed some operating steps (see 5.3 and 6.3 of this Edition; 1.3 and 2.3 of Edition 1985);

- Changed the calculation method and calculation formula (see 5.4 and 6.4 of this Edition; 1.4 and 2.4 of Edition 1985);

- Deleted the allowable difference of the double test results of the liquid specific gravity balance method (see 1.4 of Edition 1985);

- Added the precision requirements for the relative density meter (hydrometer) method and the density bottle method (see 5.5 and 6.5 of this Edition).

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights.

This document was proposed by State Administration of Grain and Material Reserves.

This document shall be under the jurisdiction of National Technical Committee on Grain and Oil of Standardization Administration of China (SAC/TC 270).

The drafting organizations of this document. Anhui Provincial Grain and Oil Product Quality Supervision and Inspection Station, Standard Quality Center of State Grain and Material Reserves Administration, Tianjin Food Safety Testing Technology Research Institute, Guangxi Zhuang Autonomous Region Grain and Oil Quality Inspection Center, Hefei Food and Drug Inspection Center, Liaoning Provincial Grain and Material Reserve Affairs Service Center, Jiangsu Provincial Grain and Oil Quality Monitoring Center, Shandong Grain and Oil Testing Center, Hubei Grain, Oil and Food Quality Supervision and Inspection Center, Kunming Grain, Oil and Feed Product Quality Inspection Center, Shaanxi Grain Quality and Safety Center, Ningxia Hui Autonomous Region Grain and Oil Product Quality Inspection Center, COFCO Zhenjiang Quality Inspection Center Co., Ltd., COFCO Cereals and Oils Industry (Chaohu) Co., Ltd., Wilmar Golden Dragon Fish Cereals and Oils Food Co., Ltd., Shanghai Kemao Cereals and Oils Food Quality Inspection Co., Ltd., Anhui Public Inspection Institute Co., Ltd., COFCO Huanghai Cereals and Oils Industry (Shandong) Co., Ltd., Chuzhou Cereals and Oils Quality Inspection Service Center.

Main drafters of this document. Hu Bin, Xu Guangchao, Li Xu, Li Yongfa, Zhang Lili, Mei Han, Wu Xianshao, Qin Shaogang, Fan Yifan, Huang Wei, Mao Yongrong, Ren Lingyun, Heng Swee Kit, Ni Shanshan, Liu Li, Zhang Jiguang, Xia Hui, Zhang Li, Zhang Liuping, Pan Kun, Zhao Shifeng, Yu Haifei, Xu Yanhui, Lu Weidong, Liu Shutong.

Versions of standard substituted by this document are.

- It was first published in 1985 as GB/T 5526-1985; - This is the first revision.

Animal and vegetable fats and oils -- Determination of relative density

1 Scope

This document describes the digital densimeter method, the relative density meter (hydrometer) method, the density bottle method and the densimeter method for the determination of the relative density of animal and vegetable fats and oils.

This document is applicable to the determination of relative density of animal and vegetable fats and oils. Among them, Method One is applicable to the determination of relative density of liquid and semi-solid animal and vegetable fats and oils; Method Two, Method Three and Method Four are applicable to the determination of relative density of liquid animal and vegetable fats and oils.

2 Normative references

This document has no normative references.

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Digital densitometer method (Method One)

5 Relative density meter (hydrometer) method (Method Two)

6 Density bottle method (Method Three)

7 Density meter method (Method Four)