4 ms·
1) don't know how much I trust the stuff from Amazon - see my earlier comment above about working at a pulse oximiter company and all the calibration tests we d
by michaelrpeskin 6y ago
1) don't know how much I trust the stuff from Amazon - see my earlier comment above about working at a pulse oximiter company and all the calibration tests we did.
2) while being an intern and sitting alone in my cube, I had dozen of test meters just sitting there and when I got bored I'd do the same thing and try to get it as low as I could by holding my breath and then snap back up. Our office is at 5000 feet so 95% is normal for healthy folks, I could get down to 85 or so and then hyperventilate back to 97% or so pretty quickly.