Smoke density refers to a measure of the amount of smoke emitted by a material under specified test conditions, which is described by the attenuation of light intensity passing through the smoke. The higher the smoke density, the more disadvantageous it is to evacuate people and put out the fire.

The use of a smoke density chamber to test the density of smoke has been established for many years and is widely used in many industries. Such as the smoke density test of rubber, plastic, textile coverings, painted surfaces, wood, and other materials. Test the optical density of the smoke generated in the combustion chamber, and use the maximum optical density as the test result to determine the smoking performance of the material under specified conditions. The NBS Smoke Density Chamber is the most widely accepted device for measuring smoke from burning materials, measuring specific optical density under both burning and non-burning conditions, it is also used to extract toxic gases. This equipment is satisfied with standards (ASTM E 662, BS6401, ISO 5659, NES 711, NEPA 258, etc).

Using ISO 5659 conical radiant heat furnace, We can change the heating condition from 10KW/㎡to 5KW/㎡by the user.

In the test of NES 711, there are non-flaming tests and flaming tests in test conditions different from ASTM E 662.

For more details please to refer:

https://www.labtesting-equipment.com/sale-12797104-nbs-smoke-density-chamber-versatile-fire-testing-instruments.html