Accurate and Dependable SpO2 Readings Start with PureLight® Sensors.

PureLight sensors produce a high-intensity pure light spectrum which eliminates variations in readings from patient-to-patient and sensor-to-sensor.

The PureLight Principle

Red and infrared light sources (LEDs) are essential to pulse oximetry sensors.

  • The red LED measures deoxygenated hemoglobin
  • The infrared LED measures oxygenated hemoglobin

Common red LEDs may produce a secondary spectrum emission (contamination)

  • Contamination impacts the oxygenated hemoglobin measurement
  • LED contamination affects an oximeter's calibration curve resulting in inaccurate SpO2 readings below 80%

PureLight red LEDs only produce the pure light spectrum

  • PureLight LEDs do not cause a shift in the oximeter's calibration curve at SpO2 levels below 80%
  • Nonin PureLight sensors eliminate variations in readings from patient to patient and sensor to sensor

Graph: Oximeter Calibration Curve