# Commission Delegated Regulation (EU) 2016/364 of 1 July 2015 on the classification of the reaction to fire performance of construction products pursuant to Regulation (EU) No 305/2011 of the European Parliament and of the Council (Text with EEA relevance), Division 1.1: For the purposes of Tables 1 to 4 the following symbols apply:

Extent: E+W+S+N.I.

(1) ‘ΔΤ’ temperature rise;
(2) ‘Δm’ mass loss;
(3) ‘tf’ duration of flaming;
(4) ‘PCS’ gross calorific potential;
(5) ‘LFS’ lateral flame spread;
(6) ‘SMOGRA’ smoke growth rate.

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Source: https://www.legislation.gov.uk/eur/2016/364/annex/division/1.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2016-364/annex/division-1.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.