Discussion Category: FT-IR SpectrophotometersLED light for the laserPerkin Elmer Spectrum One FTIR. If the LED light for the laser is green does it mean that the laser unit functional ? Mon Mar 28 2022Asked bytabsiddiqi889242Report this Post 2 years agoReply byBerriditHello, it doesn’t necessarily mean it is working. The laser could still be electronically active, but low in energy. Iberridge@isocount.com Report this Post Page 1 of 1 1