Overview
SIST EN ISO 4119:2000 (ISO 4119:1995) is an international standard specifying a method for the determination of stock concentration in aqueous pulp suspensions. Developed by the International Organization for Standardization (ISO) and adopted by the Slovenski inštitut za standardizacijo (SIST), this standard applies to laboratory testing across all types of pulps in aqueous suspension. The method is widely referenced in laboratory procedures for measuring other pulp properties and in related ISO standards, but it is not intended for determining the saleable mass of slush pulps.
Key Topics
- Purpose: Provides a standardized method to determine the percentage by mass (stock concentration) of pulp suspended in water.
- Scope: Applicable to all forms of aqueous pulp suspensions, regardless of origin or composition.
- Sampling and Preparation: Includes detailed guidance for sample collection, handling, and preparation, ensuring accuracy and repeatability.
- Laboratory Procedure: Specifies required laboratory equipment, such as balances, filtering devices, and drying ovens, for accurate mass measurement.
- Expression of Results: Outlines the calculation method for expressing stock concentration as a percentage by mass, ensuring uniform reporting across laboratories.
- Reporting Requirements: Sets clear criteria for documentation and reporting, facilitating traceability and comparability of results.
Applications
SIST EN ISO 4119:2000 is crucial for quality control and research in pulp and paper manufacturing, environmental laboratories, and related industries. The standard is commonly used to:
- Prepare samples for further physical, chemical, and mechanical testing of pulp properties, ensuring other analyses are conducted on samples with a known, consistent concentration.
- Support compliance with international and industry standards by providing a recognized method for measuring stock concentration.
- Reference in related standards-many ISO standards for testing pulp properties cite this method as the basis for sample concentration determination.
- Quality control in manufacturing processes, helping to maintain product consistency by monitoring and adjusting stock concentration in process streams.
- Research and development activities where reproducibility and accuracy of pulp concentration are critical.
Related Standards
The method described in SIST EN ISO 4119:2000 is closely aligned with other international standards within the pulp and paper industry, including:
- ISO 5263 - Pulp: Laboratory disintegration
- ISO 638 - Pulps: Determination of dry matter content (oven-dry weight)
- ISO 5269 - Laboratory sheets for testing mechanical and physical properties
- EN ISO 4119:1996 - European equivalent of this standard
These related standards often reference ISO 4119 for sample preparation and stock concentration measurement, ensuring interoperable and harmonized testing procedures within laboratories worldwide.
Keywords: pulps, stock concentration, aqueous pulp suspensions, laboratory testing, pulp concentration standards, SIST EN ISO 4119, ISO 4119, pulp sample preparation, pulp and paper industry standards, quality control.
