National classifications for reaction to fire

This document uses the European classification system for reaction to fire set out in BS EN 13501-1;
however, there may be some products lawfully on the market using the classification system set
out in previous editions. Where this is the case, Table B1 can be used for the purposes of this
document.
NOTE: The national classifications do not automatically equate with the transposed classifications
in the ‘BS EN 13501-1 classification’ column, therefore products cannot typically assume a European
class unless they have been tested accordingly.
NOTE: A classification of s3, d2 indicates that no limit is set for production of smoke and/or
flaming droplets/particles. If a performance for production of smoke and/or flaming droplets/
particles is specified, then only the European classes can be used. For example, a national class may
not be used as an alternative to a classification which includes s1, d0.