Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D2799-99
• Năm ban hành / Publication date: 1999
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Test Method for Microscopical Determination of Volume Percent of Physical Components of Coal
• Chỉ số phân loại Quốc tế (ICS) / By field: 73.040 - Than
• Số trang / Page: 4
• Phạm vi áp dụng / Scope of standard: 1.1 This test method covers the equipment and techniques used for determining the physical composition of a coal sample in terms of volume percent of the organic components and of mineral matter, if desired. 1.2 The term weight is temporarily used in this test method because of established trade usage. The word is used to mean both force and mass and care must be taken to determine which is meant in each case (the SI unit for force is newton and for mass, kilogram). 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 and health practices and determine the applicability of regulatory limitations prior to use.