This standard specifies a test method, performance requirements and classification for explosion pressure resistant glazing for use in buildings. The explosion pressure resistant glazing is intended to offer resistance against explosives with respect to human safety.This standard concerns a method of test against blast waves generated using a shock tube or similar facility to simulate a high explosive detonation.The classification is only valid for the tested glass sizes of about one square metre. Based on theoretical considerations and/or experimental work, the results can be used for estimating the explosion-pressure-resistance of other glass sizes. NOTE 1 The resistance classes are not assigned to specific situations. For each individual case, the specifier, if necessary with the help of experts in the field of explosion, should be consulted. NOTE 2 The protection provided by explosion-resistant-glazing not only depends on the product itself, but also on the design and fixing of the glass. In prEN 12488, EN 13123-1, EN 13123-2, EN 13124-1, EN13124-2, respectively, recommendations are given for proper installation of security glazing whereas in such constructions, only glass can be used with a pre-classification based on this test standard (e. g. minimal ER1 or higher).