How Accurate is a Fuel Cell Breathalyzer?

A fuel cell breathalyzer typically has the most accurate sensor for breath testing, and it usually has a small margin of error. Breathalyzers are not all the same. When choosing a breathalyzer, it is crucial to consider its sensor type. Without a doubt, these factors are essential to obtaining a highly accurate and reliable Blood Alcohol Content (BAC) result.

Fuel Cell Breathalyzer: Sensor type

BACtrack devices utilize the Xtend™ Fuel Cell Sensor Technology to maximize accuracy, the same kind of tech used in a law enforcer’s breathalyzer. A fuel cell sensor can provide consistent and accurate BAC readings from 0.00% up to 0.400%; this includes detecting trace amounts of alcohol. 

Providing a breath sample

The BACtrack personal fuel cell breathalyzer has a tiny air pump that allows users to get the highest precision and accuracy in collecting a breath sample. When conducting a breath test, the user can feel the pump collecting and processing the breath sample provided.

Accurate Breathalyzers

If you want a breathalyzer with the highest accuracy, you should consider getting a breathalyzer that utilizes fuel cell sensor technology. The BACtrack Mobile, BACtrack S80 Pro, and BACtrack Trace products are made with Xtend Fuel Cell Sensor Technology. In addition, this technology uses a linear response to measure blood alcohol content from zero to 0.400 % BAC and provides extended sensor life for long-term use and reliability.

  • BACtrack Mobile – The most compact and portable fuel cell breathalyzer available, can also wirelessly connect to all kinds of smartphones, offering result tracking and sharing features.
  • The BACtrack S80 ProUtilizes the largest fuel cell sensor in BACtrack’s pro breathalyzer series and will remain accurate for a more extended period. 
  • BACtrack TraceIs designed for portability and ease of use. The Trace has a slightly smaller sensor compared to the S80 Pro.


Common causes of inaccurate breathalyzer readings:

  • Device Error – Every device has a small margin of error.
  • Calibration – both a fuel cell breathalyzer and semiconductor device needs recalibration after a particular time or amount of usage. The lack of calibration can significantly affect the accuracy of a breathalyzer.
  • Environmental Factors – cigarette smoke and other alcoholic vapours can make a semiconductor breathalyzer sensor less accurate.
  • Wait Time – wait at least 20 minutes after your last drink before conducting a breath test.

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