Overview
SIST ISO 5647:2020 is an international standard developed by the International Organization for Standardization (ISO) that outlines a reliable method for the determination of titanium dioxide (TiO₂) content in all types of paper and board. This guidance is especially relevant for coated or filled products where precise knowledge of titanium dioxide concentration is essential for quality control, regulatory compliance, and product development. The standard specifies two validated analytical procedures: spectrophotometry and flame atomic absorption spectrophotometry, ensuring adaptability for varied laboratory capabilities and types of samples.
Key Topics
Applications
Quality Control in Paper and Board Manufacturing
- Filler and Coating Optimization: Accurate assessment of titanium dioxide content ensures product consistency, brightness, and opacity-key parameters in paper production.
- Regulatory Compliance: Facilitates meeting legal and safety requirements for titanium dioxide usage, particularly in food packaging or specialty papers.
- Research and Development: Supports the development of new paper and board grades with tailored optical and physical properties by enabling controlled formulation adjustments.
- Supplier Verification: Allows manufacturers to verify incoming raw materials align with specifications, reducing the risk of non-conforming batches.
Laboratory Analysis
- Enables quality assurance laboratories to choose the most suitable procedure based on available instrumentation (spectrophotometer or atomic absorption spectrometer).
- Provides a robust framework for sample handling, result validation, and data traceability.
Related Standards
- ISO 186 – Paper and board - Sampling to determine average quality
- ISO 287 – Paper and board - Determination of moisture content of a lot - Oven-drying method
- ISO 2144 – Paper, board, pulps, and cellulose nanomaterials - Determination of residue (ash content) on ignition at 900 °C
These related ISO standards provide references for sample preparation, moisture determination, and ash content measurement, supporting comprehensive paper and board analysis workflows.
Keywords:
ISO 5647, titanium dioxide content determination, paper and board analysis, spectrophotometry, atomic absorption spectrophotometry, TiO₂ in paper, quality control, coated paper, filled paper, ISO standards for paper industry, laboratory testing, paper manufacturing compliance.