Robbie Coull

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Equipment Reviews

Picture of nonin oximeterNonin 9500 Onyx Finger Pulse Oximeter
The smallest oxygen saturation meter you can buy, and one of the cheapest .  The Nonin finger probe SaO2 monitor is a self contained unit the size of two small boxes of matches.  Clear display shows SaO2 and pulse.

Cost:       about £350-£400


  • works on two AAA batteries
  • no cable to become damaged (the most common cause of failure in other units in my experience)
  • works on children over 1 year old (but see below)


  • no alarm, so if your monitoring a patient you need to have someone keep an eye on it all the time.
  • difficult to use on small children because there is no choice of probes - the manual says it works on children 1 year and older, and although I have managed to use it successfully on a child of 1, it is difficult.
  • the unit could be easily misplaced/broken due to its small size (see tips below)


  • attach the neck cord to the oximeter and then tie the cord to the loop inside the supplied carry pouch.¬† This will reduce the risk of losing/damaging the oximeter.

purchase on line from SP services

DISCLAIMER- reviews are impartial personal opinion and are based on my own experience with the product.  There is no conflict of interest.  No responsibility can be taken for any actions based on these reviews.



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