ISO 26845:2008

Overview

ISO 26845:2008 establishes the general requirements for the chemical analysis of refractories and refractory materials using wet chemical analysis, atomic absorption spectrometry (AAS), and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods. Published by the International Organization for Standardization (ISO), this standard outlines apparatus, reagents, sampling techniques, sample preparation, procedures, determination of loss on ignition, and the expression and reporting of results. It provides foundational procedures for laboratories analyzing refractory products and raw materials according to related ISO standards.

Key Topics

• Analysis Methods: Covers wet chemical methods, AAS, and ICP-AES techniques for refractory chemical analysis.
• Apparatus and Equipment: Specifies laboratory equipment, including spectrometers, furnaces, weighing devices, and specific platinum, porcelain, glass, and plastic ware.
• Reagents: Lists required reagents and chemicals, referencing ISO standards to ensure analytical grade quality.
• Sampling and Preparation: Describes standardized sampling, handling, and preparation for various refractory forms (shaped, unshaped, fired, raw).
• Basic Analytical Procedures: Details steps for performing dual determinations, conducting blank tests, and gravimetric loss on ignition analysis.
• Results and Reporting: Outlines criteria for result acceptance, calculation methods, permissible margins of error, and reporting requirements to ensure consistency across analyses.

Applications

ISO 26845:2008 is integral across industries where accurate characterization of refractory materials is critical, including:

• Manufacturing and Quality Control: Ensures reliable chemical composition data for refractories used in steel, glass, cement, and ceramic manufacturing.
• Materials Testing Laboratories: Provides standardized procedures for analytical services, supporting compliance and comparability of results globally.
• Research and Development: Supports laboratories and researchers in developing new refractory materials or assessing existing formulations for innovation and performance improvements.
• Raw Material Suppliers: Enables standardized chemical analysis for raw materials destined for refractory production, supporting transparency in supply chains.
• Regulatory Compliance: Assists organizations in demonstrating alignment with international best practices and meeting contractual or legislative requirements.

Related Standards

ISO 26845:2008 must be used in conjunction with several key ISO standards regarding refractory chemical analysis:

• ISO 10058 series: Chemical analysis of magnesite and dolomite refractory products (apparatus, wet chemical, AAS, ICP-AES alternatives to XRF).
• ISO 20565 series: Chemical analysis of chrome-bearing refractory products and raw materials (alternative to XRF).
• ISO 21079 series: Chemical analysis of alumina, zirconia, and silica-containing refractories.
• ISO 21587 series: Chemical analysis of aluminosilicate refractory products (alternative to XRF).
• ISO 12677: XRF analysis of refractory products (mentioned as the alternative method if appropriate instrumentation is available).
• ISO 5022: Sampling and acceptance testing of shaped refractory products.
• ISO 8656-1: Sampling of raw materials and unshaped products.

Practical Value

ISO 26845:2008 ensures uniformity, accuracy, and reliability in the chemical analysis of refractory materials. By following this standard, laboratories and manufacturers can:

• Achieve consistent analysis results across different labs and locations
• Reduce errors and variability in testing procedures
• Enhance the comparability of product data, supporting international trade and quality assurance
• Meet customer and regulatory expectations for material performance and safety

This standard is essential for anyone involved in refractory production, testing, or certification, providing a globally recognized framework for laboratory analysis using wet chemical, AAS, and ICP-AES techniques.