1.1 本试验方法包括测定颗粒活性炭的球盘硬度值的程序。就本试验而言，粒状活性炭是指颗粒为90 % 其中大于80目（180 μm），通过试验方法测定 862年2月 。 1.2 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 过去已经采用了几种方法来测定活性炭在使用条件下对颗粒尺寸降解的抵抗力，包括球盘法、搅拌棒法和灰尘淘析法。这些都没有被证明对所有应用都是完全令人满意的，并且所有这些都受到了ASTM D28委员会关于活性炭的质疑，作为建立耐降解性的测试。然而，球盘法在过去被广泛使用，在活性炭行业有着广泛的历史，用于测量松散地描述为“硬度”的特性。在这种情况下，该测试有助于确定碳的可测量特性。考虑到该测试实际上并没有测量在役抗降解性，它可以用来建立表面上相同等级碳的批次的可比性。

1.1 This test method covers a procedure for determining the ball-pan hardness number of granular activated carbons. For the purpose of this test, granular activated carbons are those having particles 90 % of which are larger than 80 mesh (180 μm) as determined by Test Method D2862 . 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. 1.4 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 Several methods have been employed in the past for determining the resistance of activated carbons to particle size degradation under service conditions, including the ball-pan method, the stirring bar method, and the dust elutriation method. None of these have proven completely satisfactory for all applications, and all have been questioned by ASTM Committee D28 on Activated Carbon as tests for establishing degradation resistance. However, the ball-pan method has been used widely in the past and has a broad history in the activated carbon industry for measuring the property loosely described as “hardness.” In this context the test is useful in establishing a measurable characteristic of a carbon. Conceding the fact that the test does not actually measure in-service resistance to degradation, it can be used to establish the comparability of lots ostensibly of the same grade of carbon.