Category ASTM Standards

📐 Test Method Overview and Significance Sulfide ion is commonly found in ground waters and wastewater, leading to odor and corrosion issues. This standard test method (D4658-15) provides a reliable means for sulfide measurement using an ion-selective electrode. The method…

ASTM D4655-95 (Reapproved 2023) provides standardized test methods for determining total, neutral, and combined acid sulfates in mineral-tanned leather. These methods are critical for evaluating leather basicity when used in conjunction with Test Method D4654. The gravimetric analysis involves precise…

📐 Composition and General Requirements This specification, D 4656-98, covers prediluted aqueous ethylene glycol base engine coolant with a minimum of 50 volume % ethylene glycol. It is formulated for use in automobiles and light-duty vehicles, providing effective cooling system…

ASTM D4653-87 (Reapproved 2020) specifies the standard test method for determining total chlorides in leather, particularly mineral tanned leather. The procedure employs a titration technique with silver nitrate to quantify chloride content, essential for quality control and material specification. 🧪…

🔬 Purpose and Significance of Sulfate Basicity This test method, designated D4654‑87 (Reapproved 2020), is issued under the jurisdiction of ASTM Committee D31 on Leather and is the direct responsibility of Subcommittee D31.06 on Chemical Analysis. Its primary scope is…

ASTM D4652-20 establishes the specifications for new polydimethylsiloxane silicone liquid intended for use as an insulating and cooling medium in electrical equipment like transformers, capacitors, and electronic assemblies. This standard is critical for ensuring the safety and reliability of high-voltage…

🧪 Scope and Data Source ASTM D4650-19 provides standard thermophysical property tables for normal butane (n-C₄H₁₀), developed using the National Institute of Standards and Technology Standard Reference Database product REFPROP, version 10.0. These tables are intended for use in calculating…

📜 Standard Overview and Scope ASTM D4651-14 (Reapproved 2020) provides standardized thermophysical property tables for pure isobutane, generated using the NIST REFPROP Version 9.1 database. These tables facilitate the calculation of pressure-volume-temperature (PVT), thermodynamic, and transport properties critical for process…

ASTM D4649-20 provides a comprehensive framework for the selection, specification, and utilization of stretch wrap films for unitizing, reinforcing, and palletizing loads within controlled indoor environments. Developed by ASTM Subcommittee D10.25, this standard guide references a wide array of test…

ASTM D465-15 (Reapproved 2024) specifies standard test methods for determining the acid number of pine chemical products, including tall oil, wood and gum rosin, and related materials. This standard includes both a potentiometric referee method and an internal indicator alternate…

This standard provides standardized test methods for determining the undrained shear strength of saturated fine-grained cohesive soils using a miniature vane shear device in a laboratory setting. It is critical for geotechnical investigations where undisturbed tube samples of clay and…

📐 Overview and Scope of D4647/D4647M The ASTM D4647/D4647M standard presents a direct measurement of the dispersibility and colloidal erodibility of clay soils by causing water to flow through a small hole punched in a specimen. Results are qualitative and…