The Nonin Onyx® Brand

Onyx is the Gold Standard in professional finger pulse oximetry.

Built for professionals and built to last, the Onyx 9500 and Onyx II 9550 provide proven SpO2 and pulse rate accuracy from pediatric to adult patients.

The Onyx 9500 and Onyx II 9550 are professional cost effective solutions for spot checks and short-term monitoring of patients.
See what medical professionals are saying about the Onyx brand
Accuracy
"It is reliable, rugged, and right at my fingertips when I need it most. The Onyx helps us make the right decisions."
Reliability
"It works accurately for small children through adults. The speed and accuracy of getting a pulse and saturation is helpful when we are crazy busy."
Jason Kutinac, Clinician
Teresa Weidenbacher, Clinician
Peace of Mind
"I am so lost without my best friend, the Nonin Pulse Oximeter…. It allows me to make my best clinical judgments on how my patients are doing in seconds."
Medical professionals have a lot to say about the Onyx's reliability and performance.
Agnes Prassas, Clinician