Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D2978-15
• Năm ban hành / Publication date: 2015
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Test Methods for Volume of Processed Peat Materials
• Chỉ số phân loại Quốc tế (ICS) / By field: 65.080 - Phân bón
• Số trang / Page: 3

Phạm vi áp dụng / Scope of standard

1.1 These test methods cover the measurement of the volume of loose and baled processed peat expressed as cubic feet and is used as a quality control measurement to determine if the package contains the labeled amount of material. The results of these test methods are highly dependent on the experience of the personnel running the procedure.

1.2 There are two test methods, Method A for Loose Peat and Method B for Baled Peat. Method A is used when the material is uncompacted and Method B is used when the material is compacted.

1.3 Units-The values stated in inch-pound units are to be regarded as standard. Except, that the sieve designations are typically identified using the "alternative" system in accordance with Practice E11, such as 3-in. and No. 200, instead of the "standard" of 75-mm and 75-µm, respectively.

1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.

1.4.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user's objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.

1.5 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.