ISO 15592-2:2001

Overview

ISO 15592-2:2001 is an international standard developed by the International Organization for Standardization (ISO) under Technical Committee ISO/TC 126, which focuses on tobacco and tobacco products. This standard specifically addresses the atmosphere requirements for conditioning and testing fine-cut tobacco and smoking articles made from it. As part 2 of the broader ISO 15592 series, this document sets precise parameters for the conditioning environment-namely temperature, relative humidity, and pressure-ensuring reliable and reproducible testing conditions for fine-cut tobacco products.

Unlike ISO 3402, which applies to leaf tobacco and tobacco used in manufacturing cigarettes, ISO 15592-2 is tailored for fine-cut tobacco, which has higher moisture content. This makes it essential for laboratories and manufacturers seeking standardized and consistent results in the analysis, quality control, and research of fine-cut tobacco and related smoking articles.

Key Topics

• Conditioning Atmosphere

  • Temperature: (22 ± 2) °C
  • Relative Humidity: (75 ± 3)%
  • Pressure: 86 kPa to 106 kPa (to be recorded if outside this range)
  • Ensures that samples reach equilibrium moisture content for accurate testing

• Test Atmosphere

  • Temperature: (22 ± 2) °C
  • Relative Humidity: (60 ± 5)%
  • Defines the environment maintained throughout the testing process

• Conditioning Procedures

  • Conditioning duration typically 72 hours with forced airflow
  • Maximum storage in conditioning cabinets is 10 days to avoid loss of volatile compounds
  • Equilibrium achieved when mass variation < 0.2% over 3 hours or humidity reaches equivalence with the conditioning atmosphere

• Sample Preparation and Handling

  • Fine-cut tobacco layers must not exceed 20 mm depth for proper conditioning
  • Samples should be teased apart for air exposure when taken from packaging
  • Fine-cut smoking articles conditioned in single layers on perforated trays with proper air circulation

• Validation and Monitoring

  • Use of calibrated hygrometers and thermometers to verify atmosphere conditions
  • Alternative conditioning methods using saturated salt solutions for humidity control when electronic cabinets are unavailable
  • Regular mass monitoring of tobacco samples as a secondary standard to verify conditioning environment stability

Applications

ISO 15592-2:2001 is vital for tobacco manufacturers, quality control labs, and research institutions involved with fine-cut tobacco products and smoking articles. Practical applications include:

• Quality Control Testing
  Ensuring that fine-cut tobacco samples and smoking articles are conditioned under standardized atmospheres before chemical and physical property analysis for consistent results.

• Product Development and Research
  Providing consistent environmental conditions to evaluate new blends, smoking articles, and effects of additives or materials on tobacco properties.

• Regulatory Compliance
  Supporting compliance with international testing standards for tobacco products to meet legal and trade requirements.

• Material Testing
  Conditioning wrappers and components of fine-cut smoking articles to determine their behavior under controlled humidity and temperature.

This standard improves comparability of data across different labs and products by standardizing pre-test conditioning, critical for accurate nicotine, moisture, and particulate matter analysis.

Related Standards

• ISO 15592-1: Methods of sampling fine-cut tobacco
• ISO 15592-3: Determination of total particulate matter and nicotine analysis in smoking articles
• ISO 3402: Atmosphere for conditioning and testing leaf tobacco and cigarette products (not applicable to fine-cut tobacco)
• ISO 187: Standard atmosphere and conditioning for paper and board materials relevant to cigarette papers
• ISO 558: Definitions of standard atmospheres for conditioning and testing
• ISO 4677-1: Methods for determining relative humidity with aspirated psychrometers

By following ISO 15592-2:2001, stakeholders in the tobacco industry can maintain reliable measurement conditions, ensuring high-quality, standardized testing of fine-cut tobacco and its related smoking articles.