1.1 本试验方法描述了使用NPIRI研磨仪测定印刷油墨研磨细度的程序。它评估已完成分散体中最大颗粒的大小，但不评估平均粒径或粒径浓度。 1.2 本试验方法涵盖使用A1刮刀的手动和自动下降。 1.3 本试验方法适用于任何细到足以落在规定研磨规0至25μm范围内的分散体。程序略有变化，适用于糊状（非挥发性）和液体（挥发性）油墨。 注1: 本试验方法中规定的0至25μm量规原则上与试验方法中所述的0至100μm海格曼量规相似 D1210 以及ISO 1524中描述的各种仪表: 试验方法涵盖了45μm以上颗粒浓度的筛分分析 D2067 . 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 油墨中过大的颗粒可能会损坏印版、堵塞电池、堵塞喷嘴并对油墨膜的外观产生不利影响。 研磨细度测量有助于决定何时停止分散过程，以及确定测试材料是否符合供应商和客户之间商定的规范。

1.1 This test method describes the procedure for determining the fineness of grind of printing inks using a NPIRI Grindometer. It evaluates the size of the largest particles in a finished dispersion but not average particle size or concentration of sizes. 1.2 This test method covers both manual and automatic drawdowns using an A1 scraper. 1.3 This test method is applicable to any dispersion that is fine enough to fall within the 0 to 25 μm range of the specified grind gauge. With a minor variation in procedure, it is applicable to both paste (nonvolatile) and liquid (volatile) inks. Note 1: The 0 to 25 μm gauge specified in this test method is similar in principle to the 0 to 100 μm Hegman gauge described in Test Method D1210 and the various gauges described in ISO 1524:2000. Sieve analysis for concentration of particles above 45 μm is covered in Test Method D2067 . 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Oversize particles in a printing ink may damage a printing plate, plug a cell, clog a nozzle and adversely affect the appearance of printed ink films. Fineness of grind measurements are useful for deciding when to stop the dispersion process and for determining if the test material meets specifications as agreed upon between the supplier and the customer.