The primary purpose of this standard is to provide a standardized method for measuring the amount of smoke produced by a material when it is exposed to heat. Smoke is one of the leading causes of fatalities in fires, often claiming more lives than the fire itself due to asphyxiation and the blinding effect of smoke inhalation. Therefore, understanding the smoke density of materials used in construction, transportation, and electronics is a matter of life and death.
A defining feature of ISO 5659-2 is its use of a conical heater. This heater can be set to specific irradiance levels (heat flux), typically 25 kW/m² or 50 kW/m². The standard allows for testing with or without a pilot flame, which allows testers to simulate different fire scenarios—smoldering fires versus flaming combustion. Iso 5659-2 Pdf
To fully understand the , you need to visualize the test setup. The primary purpose of this standard is to
Measures how much smoke obscures light during combustion. Single-Chamber Method: Uses a sealed A defining feature of ISO 5659-2 is its
This part of ISO 5659 specifies a method for measuring the optical density of smoke produced by a single burning item (SBI) test. The test is applicable to plastics and other materials that are used in the form of sheets, films, or molded articles.