“I had an old Bactrack that led me astray in my readings, as I never had it re-calibrated. Read that I was fine but when I got the new one I was surprised how far off the old one was. .04 vs..12!!! Lesson. Always have yours re-calibrated. Outstanding device and a real situation saver.”
“This device has come in handy so many times. Any time I'm out with friends about to head home I use this handy little keychain. the reading doesn't change between breaths which to me indicates that the sensor is actually pretty accurate.”
“I bought this a couple months ago and have gotten much use out of it. It seems like the accuracy is very close if not dead on. The only problem that I have noticed is if you try to do too many back to tests it starts reading really low if not 0.0”
