动植物油脂　相对密度的测定 Animal and vegetable fats and oils—Determination of relative density  ICS  67.200.10 CCS  X 14   中华人民共和国国家标准 GB/T 5526—2024 代替 GB/T 5526—1985 2024-10-2 6发布 2025-05-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     数字密度计法（第一法）   ············································································   1      4.1     原理   ······························································································   1      4.2     仪器   ······························································································   1      4.3     步骤   ······························································································   1      4.4     计算   ······························································································   1      4.5     精密度   ···························································································   2 5     相对密度计（比重计）法（第二法）   ································································   2      5.1     原理   ······························································································   2      5.2     仪器   ······························································································   2      5.3     步骤   ······························································································   2      5.4     计算   ······························································································   2      5.5     精密度   ···························································································   3 6     密度瓶法（第三法）   ·················································································   3      6.1     原理   ······························································································   3      6.2     仪器   ······························································································   3      6.3     步骤   ······························································································   3      6.4     计算   ······························································································   3      6.5     精密度   ···························································································   4 7     密度计法（第四法）   ·················································································   4      7.1     原理   ······························································································   4      7.2     仪器   ······························································································   4      7.3     步骤   ······························································································   4      7.4     计算   ······························································································   4      7.5     精密度   ···························································································   5 附录A （资料性）    纯水密度   ···········································································   6 GB/T 5526—2024     Ⅰ 前　　言 本文件按照GB/T 1.1—2020《标准化工作导则　第1部分：标准化文件的结构和起草规则》的规 定起草。 本文件代替GB/T 5526—1985《植物油脂检验　比重测定法》，与GB/T 5526—1985相比，除结 构调整和编辑性改动外，主要技术变化如下： 更改了文件的适用范围（见第1章，1985年版的第1章）； — 增加了数字密度计法作为第一法（见第4章），密度计法作为第四法（见第7章）； — 增加了原理（见5.1和6.1）； — 删除了“试剂”（见1985年版的1.2和2.2）； — 更改了部分操作步骤（见5.3和6.3，1985年版的1.3和2.3）； — 更改了计算方法和计算公式（见5.4和6.4，1985年版的1.4和2.4）； — 删除了液体比重天平法的双试验结果允许差（见1985年版的1.4）； — 增加了相对密度计（比重计）法和密度瓶法的精密度要求（见5.5和6.5）。 — 请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。 本文件由国家粮食和物资储备局提出。 本文件由全国粮