Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D4513-11(2017)
• Năm ban hành / Publication date: 2017
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Test Method for Particle Size Distribution of Catalytic Materials by Sieving
• Chỉ số phân loại Quốc tế (ICS) / By field: 19.120 - Phân tích cỡ hạt. Rây (sàng)
• Số trang / Page: 3
• Phạm vi áp dụng / Scope of standard: 1.1 This test method covers the determination of particle size distribution of catalytic powder material using a sieving instrument and is one of several found valuable for the measurement of particle size. This test method is particularly suitable for particles in the 20 to 420-μm range. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.2.1 Exception-In 5.2, mesh size is the standard unit of measure. 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.