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Message: <blockquote data-quote="ms48mail" data-source="post: 11362310" data-attributes="member: 260933">The vast majority of devices containing LEDs are "safe under all  conditions of normal use", and so are classified as "Class 1 LED  product"/"LED Klasse 1". At present, only a few LEDs—extremely bright  LEDs that also have a tightly focused viewing angle of 8° or less—could,  in theory, cause temporary blindness, and so are classified as "Class  2".<a href="http://en.wikipedia.org/wiki/Light-emitting_diode#cite_note-81" target="_blank">[82]</a> In general, <a href="http://en.wikipedia.org/wiki/Laser_safety" target="_blank">laser safety</a> regulations—and the "Class 1", "Class 2", etc. system—also apply to LEDs.<a href="http://en.wikipedia.org/wiki/Light-emitting_diode#cite_note-82" target="_blank">[83]</a> While LEDs have the advantage over <a href="http://en.wikipedia.org/wiki/Fluorescent_lamp" target="_blank">fluorescent lamps</a> that they do not contain <a href="http://en.wikipedia.org/wiki/Mercury_%28element%29" target="_blank">mercury</a>, they may contain other hazardous metals such as <a href="http://en.wikipedia.org/wiki/Lead" target="_blank">lead</a> and <a href="http://en.wikipedia.org/wiki/Arsenic" target="_blank">arsenic</a>.  A study published in 2011 states: "According to federal standards, LEDs  are not hazardous except for low-intensity red LEDs, which leached Pb  [lead] at levels exceeding regulatory limits (186 mg/L; regulatory  limit: 5). However, according to California regulations, excessive  levels of copper (up to 3892 mg/kg; limit: 2500), Pb (up to 8103 mg/kg;  limit: 1000), <a href="http://en.wikipedia.org/wiki/Nickel" target="_blank">nickel</a> (up to 4797 mg/kg; limit: 2000), or <a href="http://en.wikipedia.org/wiki/Silver" target="_blank">silver</a> (up to 721 mg/kg; limit: 500) render all except low-intensity yellow LEDs hazardous.".<a href="http://en.wikipedia.org/wiki/Light-emitting_diode#cite_note-Limetal2011-83" target="_blank">[84]</a><a href="http://en.wikipedia.org/wiki/Light-emitting_diode" target="_blank">http://en.wikipedia.org/wiki/Light-emitting_diode</a></blockquote>

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