Review on Cheffort Automotive Concentration Measurement Laboratory by Anthony Heinrichs
Easy to use and it really works.
I tested it by exhaling on it and the reading went down immediately. I blew the sensor with oxygen with a bottle of boost oxygen and it jumped to 25%. The only thing I want is that it can display more than 50%. The 25% limit is way too low if you want to use it to test oxygen concentrators.
- Safety
- You could choose a newer model
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