CHF77.–
Ace AF33
Question about Ace AF33
Stupid question: result provided in 0/00 ... of what? It's impossible to know whether this is the direct rate in the exhaled air, or an extrapolation of the rate in the blood. Given that the blood level is generally double the level in the breath, it seems useful to have this precision so as not to be fooled at the first check. If anyone has found this information anywhere, please share it with everyone.
Helpful answer
See the instructions for use at https://www.ace-technik.com/documents....
According to this document: "The ACE AF-33 measures the alcohol concentration in exhaled air and deduces the blood alcohol content. This means that the margin of error is +/- 0.05‰ (per thousand) for a reference value of 1.00 per thousand and 25°C ambient temperature. Measured results are displayed as a 3-digit numerical value with 2 decimal places (‰ or mg/L) and are interpretable 1:1 (if, for example, the display shows the value 0.36 = 0.36 per thousand). Values measured in % BAC are displayed as 4 digits with 3 decimal places.
According to this document: "The ACE AF-33 measures the alcohol concentration in exhaled air and deduces the blood alcohol content. This means that the margin of error is +/- 0.05‰ (per thousand) for a reference value of 1.00 per thousand and 25°C ambient temperature. Measured results are displayed as a 3-digit numerical value with 2 decimal places (‰ or mg/L) and are interpretable 1:1 (if, for example, the display shows the value 0.36 = 0.36 per thousand). Values measured in % BAC are displayed as 4 digits with 3 decimal places.
Finally, I answer myself: the unit 0/00 can only correspond to a blood level of g/1000g. In air, Iron is measured at approximately 1/100,000. But one wonders how reliable this almost 100% figure is, since what is really being measured is a concentration in exhaled air, and extrapolation to blood concentration is subject to many highly variable factors. The reality therefore seems to be a very reliable measurement on exhaled air. As for the value displayed on the screen, it's an estimate of blood alcohol concentration, which is not at all as accurate. Beware of surprises!