Frequently asked questions about breathalyzer

Q: Is it possible a situation where a personal breathalyzer result showed a zero (negative), while testing a device traffic police be found alcohol?

A: No, it is not possible if your breathalyzer faces, it will necessarily capture the presence of alcohol. The only exception is in the case where the concentration of alcohol is less than the limit of detection of personal breathalyzer as minimum values are respectively – 0.10 per mil in semiconductor sensors and 0.05 per mil in electrochemical. In this case, however, the testimony of a police Breathalyzer not essential because all values below 0.16 mg / l are not taken into account by the authorities.

Q: Is it possible to use mouthpieces, different from the original?

A: The mouthpieces of modern breathalyzer and in particular to professional models, have just selected parameters for specific device so that the conduct of the test with a mouthpiece proves impossible or would greatly distorted the result.

Q: If two breathalyzers show different results, of which one we can trust?

A: Suppose that both the unit are new and are for personal use. If the result is not more than 1.00 parts per thousand, and the difference between the readings is within 0.20 per thousand it is probably both device to poise correct results because the error rate is about 10% if one breathalyzer is slightly overstated and the other is conservative limits, it is entirely possible to take into account such a difference.

Q: For results higher than 1,00 per mile should not trouble you opposed to 0.5 per thousand as at higher concentrations increased and measurement error.

A: Overall, it can be said that breathalyzers electrochemical sensor always gives more accurate results than those with semiconductor sensor.