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Return to Nonin Onyx Vantage 9590 Finger Adult/Pediatric Pulse Oximeter. #1 Professional Oximeter Made in USA - Includes Free Carrying Case
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4 of 5 Important thought January 23, 2021
Reviewer: Kathleen Fahey from Jupiter, FL United States  
I'm an ICU RN. I 've handled pulse oximeters for 30 years, which is why I bought this product which is exceptional. One significant recommendation. The instructions are on a computer disc. I'm sick, I can't even get to my computer. A small diagram of the way to open and close the battery compartment would go a long way. I am weak, I tried everything and finally found a small screw driver to pry open the compartment. I almost broke this expensive,. plastic piece of equipment.  This may be an oversight, but it is a big one.

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4 of 5 Works well January 22, 2021
Reviewer: John D'Amico from Newark, DE United States  
The product seems well built and works fine.  Believe it or not, I had trouble figuring out how to put the batteries into the unit.  A little diagram would have been helpful.  The package included a pair of CDs that are supposed to hold the manual for the device.  The problem is, computers don't automatically come with a CD/DVD drive anymore.  So it's not helpful.  It would be better to house this information on the website where it could be accessed easily.

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5 of 5 Handy Gadget! January 19, 2021
Reviewer: Ana from San Jose, CA United States  
Quickly and easily know your oxygenation and heart rate!  Small gadget can be hung or stored anywhere.  reasonably priced.  Easy to read.

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5 of 5 January 19, 2021
Reviewer: Charlotte Kingsley from Sachse, TX United States  


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5 of 5 Reliable, made in the than the cheap models January 14, 2021
Reviewer: Suzanne Rudd from Sevierville, TN United States  
Purchased this for our family during the Covid pandemic… after purchasing a couple different cheap models online, all of which broke after a few test uses. If you’re reading this, please do not trust the reviews on Amazon as I received ‘free products in return for reviews’ offers for the pulse oximeters I purchased on Amazon. The last thing one wants for emergencies is to find the product they purchased no longer works.
This is made in the USA, and it has worked from day one to date. Matching it to my physician’s offices pulse oximeter, the readings are identical.
Thank you for providing a well-made product! Shipping was fast, ordering easy. Well worth the expense.


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5 of 5 Nonin 9590 Pulse Oximeter January 12, 2021
Reviewer: Anonymous Person from Brighton, MI United States  
Our second purchase of a Great US Product.
Should be a standard household medical item - like a thermometer.

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5 of 5 Nonin Onyx Vantage 9590 Oximeter January 11, 2021
Reviewer: ed01432 from Ayer, MA United States  
Just recently received the 9590, and it seems to be an accurate, well constructed device.  In comparing the 9590 with the still working well 9500 model, accuracy seems to be about the same, speed of operation about the same, and low profusion operation about the same.  The 9590 is smaller and provides many many more spot checks on a set of batteries.  If you own an operational 9550 or 9500 and the improvement in spot check number is not important to you, then I see no need to upgrade to the 9590. One additional comment: The battery compartment for the 9590 likely provides an additional improvement. The 9500 is sensitive to the voltage drop resulting from battery terminal corrosion which might require occasionally swabbing the terminals using a Q-Tip and rubbing alcohol, easily done.

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5 of 5 Good product, worth the money January 11, 2021
Reviewer: Anonymous Person from Loveland, CO United States  
I am a biomedical engineer and needed a simple pulse oximeter for my personal use.  You can buy cheaper devices but this pulse ox met all my criteria for accuracy and reliability.

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5 of 5 December 30, 2020
Reviewer: Gerron Vartan from Atherton, CA United States  
Arrived on time. Device is excellent (and NOT inexpensive)

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5 of 5 Nice USA product December 21, 2020
Reviewer: Kenneth Grimes from Wellsville, OH United States  
the pulse ox worked right out of the box. well made the display is clear even though it maybe  little hard for those with older eyes to see.

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