Closed Cup 2 : A test procedure used to measure the flash point of a material, using a closed cup, which prevents the vapour from escaping. A closed cup flash point is generally lower than a flash point measured using an open cup method
Canadian Centre for Occupational Health and Safety CCOHS, Chemicals & Materials Safety Data Sheet MSDS - An Explanation of Common Terms, Ontario, Canada 2013. http://www.ccohs.ca/oshanswers/chemicals/glossary/ msds_gloss_a.html, (Common MSDS Terms Used in Occupn Hlth and Sfty - Canad) {630}