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🔬 Scope and Summary of Test Method D4185-23 This standard test method details the procedures for the collection, acid dissolution, and determination of trace metals present in workplace atmospheres using Flame Atomic Absorption Spectrophotometry (FAAS). It is specifically tailored for…
📐 Scope and Principles of CRS Testing This standard (Designation D4186/D4186M−20´2) specifies the methodology for determining the one-dimensional consolidation properties of saturated cohesive soils under continuous controlled-strain axial compression, universally referred to as Constant Rate of Strain (CRS) testing. The…
ASTM D4182 – 97 (Reapproved 2004) establishes a standardized practice for evaluating laboratories that utilize ASTM procedures in the sampling and analysis of coal and coke. It serves as a framework for assessing laboratory competence in accordance with the requirements…
📐 Particle Types and Size Range ASTM D4180-23 covers formed catalyst and carrier particles including extrudates, spheres, and pellets with nominal diameters between 0.8 mm (1/32 in) and 4.8 mm (3/16 in). Values stated in SI units are standard; inch-pound…
The ASTM D4181-00 standard provides a comprehensive classification system for acetal (POM) materials used in molding and extrusion. It covers both virgin and recycled materials, ensuring quality and performance through defined property requirements and test methods. This standard is essential…
📏 Scope and Applicability ASTM D4179-22 provides a standard method for determining the single pellet crush strength of formed catalysts and catalyst carriers. It applies to regular shapes such as tablets (cylindrical particles with consistent length) and spheres, but explicitly…
ASTM D418 – 93 provides standardized test methods for evaluating the construction of machine-made pile yarn floor coverings, including woven, knitted, and tufted types. These methods are applicable to materials in various stages of production, from uncoated greige goods to…
📐 General Principles, Scope, and System Requirements (Part I) The ASTM D4177‑22 standard, officially designated as the Manual of Petroleum Measurement Standards (MPMS) Chapter 8.2, defines a performance‑based practice for the automatic sampling of liquid petroleum, crude oils, and intermediate…
⚙️ Practice Overview and Apparatus Requirements ASTM D4178-23 covers a calibration technique based on the preparation of standards of known water content. This technique is applicable to the production of standards between 20 cm³/m³ and 2000 cm³/m³ water. The values…
The ASTM D4176-22 standard defines two visual inspection procedures for detecting free water and solid particulate contamination in distillate fuels. Applicable to fuels with an ASTM color of 5 or less and distillation end points below 400 °C, these methods…