BS EN IEC 62554:2011+A1:2018 specifies sample preparation methods for determining mercury levels in
new tubular fluorescent lamps (including single capped, double capped, self-ballasted and CCFL for
backlighting) containing 0,1 mg mercury or more. The intended resolution of the methods described in
this standard is of the order of 5 %.Mercury level measurement of spent lamps is excluded, as during lamp operation, mercury gradually
diffuses into the glass wall and reacts with the glass materials. The test method of this standard does
not recover mercury that is diffused into or reacted with or otherwise incorporated irreversibly with
the glass wall of discharge tubes.This standard does not contain information on measurement. Measurement is specified in IEC 62321.Cross References:IEC 62321:2008EN ISO 3696:1995IEC 17025:2005EN 62321:2009ISO/IEC 17025:2005EN ISO/IEC 17025:2005EN 62321-4 (IEC 62321-4:2013) ASISO 3696:1987IEC 62321-4:2013/AMD1:2017EN 62321-4:2014/A1:2017IEC 62321-4:2013IEC 62321EN 62321Incorporates the following:Amendment, March 2018