Smoke Developed Index

A comparative measure expressed as a dimensionless number, derived from measurements of smoke obstruction versus time in NFPA 255, Standard Method of Test of Surface Burning Characteristics of Building Materials.

Chemwatch helps thousands of organisations manage chemical safety. Book a free demo to see how.
Book a Demo →
As scientists who evolve with technology we treat innovation as a way of life, a life we dedicate to improvement and advancement of Safety, Health and Environment.
© Copyright 2026 Chemwatch
Chemwatch
Powered by  GDPR Cookie Compliance
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.