IEC TS 62607-6-19:2021

Overview

IEC TS 62607-6-19:2021 defines a standardized method for determining the elemental composition of graphene-based powders (graphene, graphene oxide (GO), reduced graphene oxide (rGO)) using CS analyser and ONH analyser techniques. The Technical Specification specifies how to measure mass fractions of carbon (C), sulfur (S), oxygen (O), nitrogen (N) and hydrogen (H) by analysing combustion/pyrolysis gases and reporting results for nanomanufacturing quality control.

Key topics and technical requirements

• Scope and materials: Applicable to powder forms of graphene, GO and rGO; focuses on heteroatom content as key control characteristics for product purity and performance.
• Measurement principles:
  • Carbon and sulfur are quantified from combustion products (CO, CO2, SO2) using a CS analyser with an infrared gas detector (IGD) based on non‑dispersive infrared adsorption.
  • Oxygen, nitrogen and hydrogen are derived by pyrolysis with an ONH analyser: O from CO/CO2 (IGD), N from converted N2 detected by thermal conductivity detector (TCD), and H from H2 or H2O using TCD or IGD as appropriate.
• Sample preparation and procedure: Standardized sample handling, calibration of analysers, ambient conditions, and a detailed measurement protocol are specified to improve repeatability.
• Data handling and reporting: Requirements for test reports include sample identification, test conditions, measurement specifics and results; Annex A provides a recommended test report format.
• Accuracy and validation: Measurement accuracy, calibration, and comparative case studies (Annex B) with other analysers (e.g., elemental analysers) are provided to support method validation and uncertainty assessment.

Applications and users

This Technical Specification is practical for:

• Manufacturers of graphene materials for quality control (QC) and batch release testing.
• Analytical laboratories performing elemental composition testing of nanomaterials.
• R&D teams characterizing heteroatom doping and purity effects on electrical, thermal and chemical properties.
• Procurement, compliance and product specification authors who need standardized reporting for supplier verification and regulatory submissions.

Practical uses include material acceptance testing, process control in nanomanufacturing, comparative studies of synthesis routes (oxidation/reduction), and establishing product specifications for electronics, energy storage and composite applications.

Related standards

• IEC TS 62607-6-19 is part of the broader IEC TS 62607 nanomanufacturing - key control characteristics series. Users should consult other parts of the series for complementary measurement methods, and follow referenced normative documents described in the Technical Specification for full implementation.