🔬 FORENSICS O2 Detector: NIST Calibration & Certificate, Dust & Explosion Proof, USB Rechargeable, Sound/Light/Vibration Alarms, 0-30% Oxygen Review

I have never used an oxygen detector before and had to learn what it does and doesn't do. The support questions I asked were answered exceptionally well and quickly.

This is an oxygen tester. They are enough for a test period of about a year. Store it in plastic to make it last as long as possible, as exposure to room air will shorten its lifespan. We ended up sending it back and paying a pro to test our machines.

I work at a winery with a nitrogen generator to keep some processes anaerobic. I use this device to ensure that the oxygen has been removed from the gas when applied. I was able to set a low alarm so that an alarm would sound when the O2 was low enough to let me know everything was fine.

We use this O2 detector at all our events where liquid nitrogen is used for safety testing. It is easy to use, portable and has a long battery life. The screen backlight is a handy feature. small size makes it easy to transport.

Calibration information was very confusing. Information about the battery for charging was also incomplete. This is the first time I've been disappointed with the things I've bought from Amazon. I think I'll look for other sources for the products I buy online.

Unit looks good overall but the calibration (calibrated late April 2019, purchased mid-May 2019) was very different by a few %. This is frustrating for one of two reasons: either a) the calibration performed by the company was not performed correctly (or not performed at all) and therefore the calibration certificate is incorrect, or b) the calibration has been greatly delayed in less than a month, which means , that most likely the block is defective. But I don't know which one. So I will…