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This article provides a technical overview of ASTM D3652/D3652M – 01 (Reapproved 2020), the standard test method for determining the thickness of pressure-sensitive tapes. Thickness, also referred to as caliper or gage, is a critical physical property influencing the performance,…
📐 Scope and Significance of ASTM D365-23 ASTM D365-23 provides a comprehensive guide for the evaluation of soluble nitrocellulose base solutions. These solutions consist of various types and concentrations of cellulose nitrate dispersed in complex solvent mixtures for use in…
📐 Sample Types and Applicability This test method is applicable to a wide range of petroleum oils, including crude and refined products, as well as waterborne oils and oil-soaked materials. However, it is not suitable for highly volatile fuels like…
ASTM D3648-23 provides standard practices for the measurement of radioactivity, focusing specifically on the accepted counting practices used in radiochemical analyses. Governed by ASTM Committee D19 on Water, this standard serves as a comprehensive guide for laboratories selecting and applying…
ASTM D3649-23 provides the standard practice for conducting high-resolution gamma-ray spectrometry to measure gamma-ray emitting radionuclides in water. This methodology is essential for environmental monitoring, nuclear facility effluent analysis, and radiochemical research, detailing protocols for achieving reliable quantitative and qualitative…
ASTM D3645-15 (Reapproved 2023) provides standardized methodologies for the determination of dissolved and total recoverable beryllium in various water matrices, including wastewater. The standard outlines two primary analytical techniques: Direct Atomic Absorption and Graphite Furnace Atomic Absorption, each tailored to…
📐 Overview and Scope of D3647-16 ASTM D3647-16 is a standard practice issued under the fixed designation D3647, providing a systematic method for classifying the composition of reinforced plastic pultruded shapes. Developed by ASTM Committee D20 on Plastics and Subcommittee…
🔬 Scope and Significance This test method covers the measurement of free acidity in styrene-maleic anhydride (SMA) resins. The acid number—defined as the milligrams of potassium hydroxide (KOH) required to neutralize the alkali-reactive groups in 1 g of material—is a…
📐 Scope and Principle This test method, designated D3642 – 13 (Reapproved 2021), covers the determination of the softening point of certain alkali-soluble resins that exhibit uniform plastic flow characteristics as their melting point is approached. It is explicitly stated…
🧪 Scope and Significance of D3643-15 The ASTM D3643-15 (Reapproved 2022) standard, under the jurisdiction of Committee D21 on Polishes, specifically covers the measurement of the free acidity present in certain alkali-soluble resins. The resin manufacturer should specify whether or…