Works great. Check out our 2,000 square foot office, all open plan with partitions. Air conditioning, 7 people in the room. CO2 value at noon at 87 degrees Fahrenheit. The meter read between 1000 and 1200 ppm. Outside it's raining at 75 degrees. F. Amprobe gauge reads 380ppm at rear loading dock in open dock door inside, sheltered from rain. The reason for the difference is that people exhale CO2 and fill the space. The back of the dock where nobody produces CO2. CO2 dissolves well in water and in rain at the same level. CO2 is heavier than air and therefore reaches its lowest value in the environment. The average value in a normal open atmosphere is 400 ppm. This is a good example of what really happens with CO2. This nature test is a good example of CO2 worldwide. Green thrives in this example of nature. Photosynthesis takes place in plants, and the sun's heat is the worker that splits CO2 into carbon and oxygen. The carbon is absorbed by the green leaves of trees and plants into carbolic acid and releases oxygen gas (O2) into the air. The carbon in the water becomes carbolic acid, and the roots use it to form complex organic compounds. The result of this molecular reaction is wood. This meter proves that nature is a complex organic reaction that sustains life on this planet. We love this counter because it tells us more about what keeps us alive.
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