What are the laser safety classifications and what types of lasers do they represent?

US (21CFR1040.10/.11) & ANSI Z136IEC (EN60825)MeaningTypical Applications
I1Safe; Hazardous laser source embedded in safe productLaser printers and CD players
1MSafe except when used with magnifying opticsMicroscope illuminators
II2Low powerAlignment, distance, and quantity measurement
lla2MLow powerStore barcode scanner and laser pointers
IIIa3RMedium powerAnalytical instrumentation, scanners, and laser pointers
IIIb3BIntermediate powerAnalytical instrumentation
IV4High powerMaterials processing
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