ASTM D4793-09 (Reapproved 2023), formally known as the Standard Test Method for Sequential Batch Extraction of Waste with Water, is a critical protocol under the jurisdiction of ASTM Committee D34 on Waste Management. This method provides a rigorous laboratory framework…

The ASTM D4794-94 (Reapproved 2022) standard describes a definitive gas chromatographic method for determining the level of eth © 2026 TNLab — This article is a technical interpretation for reference only. The original standard as published by ASTM International takes…

⚙️ Scope and Procedure Selection ASTM D4791 – 19 (Reapproved 2023), developed by Committee D04 on Road and Paving Materials, provides a standardized test method for determining the percentages of flat particles, elongated particles, or flat and elongated particles in…

📐 Overview and Specimen Preparation ASTM D4792/D4792M describes a test method for assessing the potential volume expansion of dense graded, compacted aggregates containing components that undergo hydration, such as free calcium and magnesium oxides. Specimens are prepared by compacting the…

📖 Scope and Referenced Documents ASTM D4790-23 is the definitive standard terminology for Aromatic Hydrocarbons and Related Chemicals. Under the direct jurisdiction of Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals, this standard establishes a uniform lexicon to ensure…

🔬 Overview and Scope of ASTM D4788–03 ASTM D4788–03 (Reapproved 2022) defines a standardized infrared thermography (IRT) method for detecting delaminations within portland-cement concrete bridge decks. This non-destructive test method is specifically designed for exposed bridge decks, as well as…

This standard, officially designated D4789 −20, establishes the test method for determining the solution color of bisphenol A (4,4′-Isopropylidenediphenol). The procedure quantifies the color of a methanol-based solution by comparing it to the Platinum-Cobalt (Pt–Co) Color Scale, up to a…

The ASTM D4786-00 (Reapproved 2024) standard specifically defines the methodology for determining the stitch-tearing strength of leather when a tear originates from a single hole. This test method is intended for rating heavy leathers and has been approved for use…

📐 Scope and Significance of Discontinuity Testing ASTM D4787‑24 is a standard practice that establishes procedures for the detection of discontinuities in nonconductive linings or coatings applied to concrete substrates. These discontinuities can critically undermine the protective function of the…

ASTM D4784-23 establishes a rigorous framework for calculating the density of saturated Liquefied Natural Gas (LNG) mixtures under defined conditions. This specification is essential for ensuring uniformity and high precision in LNG density predictions, directly supporting critical applications such as…

🧪 Overview and Test Method Summary This standard, designated ASTM D4785-20, provides a rigorous test method for the quantification of low levels of radioactive iodine isotopes in water. The procedure relies on the chemical isolation of iodine from a 4…

🧪 Scope and Summary of Test Methods ASTM D4783 −01 (Reapproved 2021) outlines standard test methods for evaluating the resistance of liquid adhesive preparations to microbial attack while stored in the container. The core objective is to determine whether an…

📐 Scope and Apparatus Specifications ASTM D4781-24, under the jurisdiction of Committee D32 on Catalysts, establishes a standardized procedure for determining the mechanically tapped packing density of fine catalyst and catalyst carrier particles. The method is strictly limited to particles…

🧪 Test Method Summary and Critical Apparatus ASTM D4782‑24 outlines a wet chemistry procedure for determining palladium in fresh molecular sieve catalysts containing approximately 0.5 % Pd by weight. The sample is digested with hydrofluoric acid to remove the silica matrix,…

⚙️ Scope and Application This standard test method, designated D4780-23, covers the determination of the specific surface area of catalysts and catalyst carriers in the low surface area range of 0.05 m²/g to 10 m² It utilizes a volumetric measuring…

ASTM D4779-93 provides a standardized method for determining total carbon (TC), organic carbon (OC), and inorganic carbon (IC) in high purity waters such as demineralizer effluent, condensate, and electronic grade rinse water. The method is specifically validated for a concentration…

ASTM D478-02 (Reapproved 2019) defines the specifications for zinc yellow (zinc chromate) pigments, which are critical components in anti-corrosion primer systems for metal substrates. The standard establishes compositional purity and performance requirements for two distinct grades of this reactive chromate…