SIST EN ISO 14720-2:2026 PDF

Overview

SIST EN ISO 14720-2:2026 specifies standardized methods for determining sulfur content in non-oxidic ceramic raw materials and ceramic materials, especially those capable of complete oxidation at elevated temperatures in an oxygen atmosphere. This European and international standard is highly relevant to carbon and graphite-based ceramics, ensuring accurate sulfur quantification using either inductively coupled plasma optical emission spectrometry (ICP-OES) or ion chromatography (IC) following combustion in an oxygen flow. It replaces the earlier EN ISO 14720-2:2013 with updated procedures and precision data.

Adhering to this standard allows laboratories and manufacturers in the ceramics industry to assess and report sulfur content accurately, supporting compliance, quality control, and material innovation.

Key Topics

• Scope and Applicability:
  • Focus on non-oxidic ceramics (e.g., carbon, graphite materials)
  • Suitable for materials with sulfur mass fraction up to 10% and ash content less than 20%
  • Not applicable for materials with barium above 10 mg/kg (sulfur in barium sulfate is not detected)
• Analytical Methods:
  • Sulfur determination by ICP-OES with lower detection limit of 0.5 mg/kg
  • Sulfur determination by IC (as sulfate) with a practical detection limit of 5 mg/kg
  • Both methods follow sample oxidation in an oxygen atmosphere at high temperatures
• Accuracy and Repeatability:
  • Double testing and blank value determination recommended to ensure reliability
  • Guidance provided for dealing with interferences and calibration
• Sample Preparation:
  • Requires representative sampling
  • Particle size reduction (≤160 μm) and proper drying for accurate measurements
• Reporting Requirements:
  • Comprehensive test report including method reference, sample details, results, and laboratory identification

Applications

• Quality Control: Manufacturers and testing laboratories use this standard to verify the sulfur content in ceramic and refractory materials, ensuring product consistency and regulatory compliance.
• Material Research: Enables researchers to evaluate sulfur levels in advanced ceramic materials, essential for innovation in industries like electronics, metallurgy, and construction.
• Supplier Assessment: Facilitates raw material suppliers in certifying batch quality according to international requirements, supporting trade and procurement decisions.
• Compliance and Certification: Supports companies in meeting regional and global regulations regarding sulfur in ceramic materials, contributing to product safety and environmental standards.

Related Standards

• ISO 14720-1: General requirements for sulfur determination in ceramic materials.
• ISO 10304-1: Water quality - Determination of dissolved anions by liquid ion chromatography (relevant for sulfate measurement in IC).
• ISO 11885: Water quality - Determination of selected elements by ICP-OES (instrumental reference for sulfur analysis).
• ISO 5725-2: Accuracy (trueness and precision) of measurement methods and results.

By following SIST EN ISO 14720-2:2026, laboratories and ceramic manufacturers ensure the precise, repeatable determination of sulfur in non-oxidic ceramics, supporting high-quality products and compliance with international standards. This standard is vital for anyone working with raw materials, refractory products, or advanced ceramic specialties where sulfur content impacts performance, safety, or regulatory acceptance.