Applies to electrically powered laboratory atomic spectrometers with thermal atomization, including atomic absorption spectrometers, emission flame photometers, atomic fluorescence spectrophotometers, inductively coupled plasma spectrometers, microwave coupled plasma spectrometers, and mass spectrometers, all with thermal atomization and ionization (including tubing and connectors which are provided by the manufacturer for connection to external supplies). This publication has the status of a group safety publication in accordance with IEC Guide 104.