The breathalyzer is a device created to measure the values of ethanol contained in the blood, invented back in 1954 by an American police captain, Robert Borkenstein.
The practice of blowing into the device, less invasive than a blood sample, had an immediate success, above all, thanks to the acceptable degree of precision of the machinery. After drinking a thirst-quenching beer or a glass of wine, the ethanol contained in these drinks is absorbed by the stomach and dilutes in the water contained in our body.
Part of this ethanol is metabolized while the remaining portion is eliminated as slag from the body. The breathalyzer can measure the concentration of what remains, returning a value that, according to the Italian road code, must not exceed 0.5 g / l.
Right below, we had listed out the best breathalyzers.
SaleRANK NO. 1
BACtrack S80 Breathalyzer | Professional-Grade Accuracy | DOT & NHTSA Approved |...
- 1 RATED BREATHALYZER BY WIRECUTTER - "After 65 hours of research, which included getting intoxicated at a police station to test...
- PROFESSIONAL-GRADE ACCURACY - Powered by BACtrack's largest platinum-based Xtend Fuel Cell Sensor, the S80 utilizes the same...
- SIMPLE, ONE-BUTTON OPERATION - The BACtrack S80 is extremely easy to use. Simply insert the two included AA batteries, power on...
- DOT/NHTSA APPROVED & FDA 510(k) CLEARED - Designated by the US DOT & NHTSA as an approved breath alcohol screening device, the S80...
- ONE YEAR WARRANTY - If your BACtrack S80 ceases to function properly during the first year of operation, we will repair or replace...
RANK NO. 2
Breathalyzer, Upgraded Portable Professional High-Accuracy Breathalyzers for...
- High Precision Chip: Breathalyzers Upgraded 5.0 High sensitive sensor for BAC test, so that you can get fast and accurate results,...
- Diversified and Thoughtful Design: In order to provide a good customer experience for the alcohol tester, engineers have specially...
- Portable Breathalyzer: The product is only 60 g and can easily be carried in your purse or pocket. Ideal for weddings, parties,...
- Fast and Easy Test: Install 3 AAA batteries and mouthpiece, long press the start button, after a "beep" the screen displays "WAIT"...
- Comprehensive After-Sales Service: If you encounter any problems during use, please contact us in a timely manner. Our after-sales...
RANK NO. 3
BACtrack C6 Keychain Breathalyzer | Professional-Grade Accuracy | Optional...
- ESTIMATE YOUR ALCOHOL LEVEL WITH PRO-GRADE ACCURACY - Powered by BACtrack's patented BluFire Fuel Cell Sensor, the C6 utilizes the...
- KNOW WHEN YOUR BAC WILL RETURN TO 0.00% - BACtrack's innovative ZeroLine technology estimates the time until your BAC is 0.00%,...
- CALL AN UBER - Remember, the only safe time to drive is when your BACtrack shows 0.00%. Anything above that? You can call an Uber...
- OPTIONAL WIRELESS CONNECTIVITY - Use the BACtrack C6 with or without your smartphone. "Standalone Mode" delivers your BAC results...
- ONE YEAR WARRANTY - If your BACtrack C6 ceases to function properly during the first year of operation, we will repair or replace...
RANK NO. 4
Breathalyzers for Alcohol Rechargeable | 3s Preheating Fuel Cell Sensor |...
- High Precision Fuel Cell Sensor*---This breathalyzers for alcohol adopts an 2025 new fuel cell sensor, delivering...
- Ultra-Fast Preheating & Instant Results*---The portable breathalyzer completes preheating in just 3 seconds and enters measurement...
- Convenient Rechargeable Design & Extended Battery Life*---Equipped with a built-in rechargeable battery, this alcohol breathalyzer...
- Anti-Interference Accuracy & Low Maintenance*---Effectively filters false alerts from substances like acetone, guaranteeing...
- Stable Continuous Testing Without Delays*---No lengthy waits between tests—even with back-to-back measurements, accuracy remains...
RANK NO. 5
Breathalyzer, Professional-Grade Alcohol Tester with Blue Digital LCD Display...
- 【FAST & ACCURATE】Breathalyzer uses a dedicated high-precision semiconductor sensor, which can accurately measure the alcohol...
- 【EASY TO USE】Just insert two AA batteries (batteries are not included in the product), long press the start button, wait 19...
- 【MEASURING RANGE】Breathalizer has an alcohol measurement range of 0.000 to 0.200% BAC. When the test result reaches the...
- 【AUDIO ALARM】If the test result exceeds 0.050% BAC, a warning signal (“di di di…”) will be emitted to remind you of the...
- 【COMPACT & PORTABLE】This Portable Breathalyzer weighs only 70 grams and can easily fit in a pocket or bag. After 25 seconds of...
SaleRANK NO. 6
BACtrack C8 Breathalyzer | Professional-Grade Accuracy | Optional Wireless...
- ESTIMATE YOUR ALCOHOL LEVEL WITH PRO-GRADE ACCURACY - Powered by BACtrack's patented BluFire Fuel Cell Sensor, the C8 utilizes the...
- KNOW WHEN YOUR BAC WILL RETURN TO 0.00% - BACtrack's innovative ZeroLine technology estimates the time until your BAC is 0.00%,...
- CALL AN UBER - Remember, the only safe time to drive is when your BACtrack shows 0.00%. Anything above that? You can call an Uber...
- OPTIONAL WIRELESS CONNECTIVITY - Use the BACtrack C8 with or without your smartphone. "Standalone Mode" delivers your BAC results...
- ONE YEAR WARRANTY - If your BACtrack C8 ceases to function properly during the first year of operation, we will repair or replace...
SaleRANK NO. 7
BACtrack Go Keychain Breathalyzer (White) | Ultra-Portable Pocket Keyring...
- QUICKLY & EASILY ESTIMATE YOUR BAC - Proprietary Advanced MicroCheck Sensor technology delivers reliable, accurate BAC results you...
- EASY TO USE - One button operation means you simply power on your Go keychain breathalyzer and begin testing in seconds. It's that...
- TAKE IT WITH YOU ANYWHERE - The ultra-compact BACtrack Go breathalyzer keychain easily fits in a pocket or purse, making it a...
- OPTIMAL BREATH CAPTURE - The innovative fold-out mouthpiece ensures only your breath goes into the alcohol tester, while other...
RANK NO. 9
BACtrack Element Breathalyzer | Professional-Grade Accuracy | DOT & NHTSA...
- PRO-GRADE ACCURACY - Powered by BACtrack's platinum-based Xtend Fuel Cell Sensor, the Element utilizes the same professional-grade...
- ONE-BUTTON OPERATION - The BACtrack Element is extremely easy to use. Simply insert the two included AAA batteries, power on your...
- DOT/NHTSA COMPLIANT - Designed to meet the rigorous standards of expert alcohol screeners, from roadside law enforcement to...
- SMALL & PORTABLE SIZE - The Element is BACtrack's smallest professional breathalyzer, making it easy to take with you anywhere you...
- ONE YEAR WARRANTY - If your BACtrack Element ceases to function properly during the first year of operation, we will repair or...
RANK NO. 10
Breathalyzer, Professional Grade-Accuracy Breathalyzers for Alcohol, 2025...
- Professional-Grade-Accuracy: The breathalyzer Upgraded 5.4 IC chips Highly Sensitive semiconductor sensor, Professional testing to...
- Easy to Operate: Install 3 * AAA battery, insert the mouthpieces, long press the start button, and after a beep, the screen will...
- Mini portable: The alcohol tester weighs only about 70 grams, so it won't take up space to be placed in a car, bag, or pocket....
- Voice Alert and LED ligiht Color Distiction: After using the breathalyzer tester, when the result is beteen 0.00-0.019, a "di"...
- Comprehensive After-Sales Service: We are provide 1-year quality warranty, no need to worry. We are a professional high-end brand...
SaleRANK NO. 11
CeezByte Upgraded Breathalyzer,High-Accurate Breathalyzers for Alcohol with LCD...
- Accurate Measurement: Utilizing high-sensitivity semiconductor sensors, this breathalyzer provides precise BAC readings displayed...
- Easy to Use: Simply prepare 3 AAA batteries, insert the mouthpiece, and turn on the device. After a 15-second warm-up, blow into...
- LED Display & Color Indicators: The breathalyzer features both audio and visual indicators. When the BAC is between 0 and 0.02%,...
- Compact and Portable: Designed for convenience, this professional breathalyzer measures just 126x55x22mm, easily fitting into a...
- Product and Service: Includes 1 alcohol breathalyzer, 10 mouthpieces, 1 user manual, and 1 carrying pouch. Enjoy a 1-year warranty...
RANK NO. 12
Amacam Alcohol Breathalyzer Portable Breath Tester AT-100 Accurate Digital...
- EASY TO USE: This very portable breath tester can be with you at all times. Keep it either on your keyring, handbag, purse or on...
- DURABLE COMPACT DESIGN: The AT-100 Tester has been designed with the you the motorist in mind. perfect to keep in your car.
- DIGITAL ALCOHOL BREATHALYZER: This is the latest in breathalyzer design. Plug and Play. Not complicated very easy to set-up.
- ACCURATE READINGS: This tester has been used and appreciated as a premium product by motorists in the USA and around the world.
- LARGE LCD SCREEN: The background light helps you to see the read-out clearly. So avoiding any confusion and keeping you safe to...
SaleRANK NO. 13
Breathalyzer, Professional-Grade High Accuracy Portable USB Rechargeable Alcohol...
- 【Professional High-Precision Sensor 】: The AT7000 breathalyzer is newstversion in 2024, upgraded with the great 4.0 sensor to...
- 【USB Charging with Large Capacity】: In order to make it more convenient and free for customers to use the alcohol tester, we...
- 【Powerful Features】: 1. Record 20 test records; 2. Quickly detect results within 5 seconds; 3. Accurate to 3 decimal places;...
- 【Easy to Operate】: After turning on, wait for 20 seconds for preheating time, then start blowing air for 3-5 seconds to get...
- 【Portable & Replaceable Mouthpieces】:Portable: The alcohol tester is very lightweight and small, making it easy to put in...
Buying Guide to Select the Best Breathalyzers
Sensor and Performance
The breathalyzer is an instrument that, through the analysis of the exhaled alveolar air, allows to measure the concentration of alcohol in the blood. In particular, the component that detects the ethanol value is the sensor.
Before buying a breathalyzer, pay attention to the type and quality of the latter because it is the most sensitive and delicate part of the appliance and is altered by humidity, pollution, and other factors; sooner or later, it will have to be replaced.
On the market, there are numerous models with a very different cost. Compare prices and features but pay attention, therefore, to the sensor’s performance. A valid one should allow several hundred, if not thousands, of tests to be performed before being replaced.
The sensors can be a semiconductor, electrochemical, and infrared, but those for personal and non-professional use are the first that also have an affordable cost. Others may even cost thousands of euros, for example, those supplied to law enforcement.
In any case, the breathalyzer must have a high degree of accuracy to be able to get driving with an absolute peace of mind. The advice is to prefer models with a tolerance of no more than ± 10%.
The sensor itself does not have a short average life, the problem is the calibration that is lost over time, and it is, therefore, necessary to carry it out periodically. Most users, however, target those models that do not require it since they provide for the simple replacement of the sensor with a new one.
Dimensions and Mouthpieces
The size of the breathalyzer might make a difference to you. Some more equipped and complete models are even sold with a briefcase that, however practical, could prove too bulky for your needs.
In this case, the best brand of breathalyzers is the one that makes the smallest and most comfortable tools to always carry with you. Most of them, however, has a compact and light design that allows you to keep them in the glove compartment of the car or even in your purse.
There are, however, some models that are even pocket-sized and can always be kept with them as a key ring to carry out the test at any time and anywhere, without having to reach the car first, which, perhaps, is very far away.
We advise you to choose those models that have several individually sealed mouthpieces in the package – maybe four or five – and not just one. They are small plastic objects at a low price, but they are instrumental because they allow the test to be carried out quickly by several people.
Operation
The operation of the breathalyzers should not be complicated but, studying the user review, you could identify what seems the simplest of all, where the instructions in Italian are included which clearly explain how to set the values for each unit of measurement.
Some have two, others more, for example,% BAC (Blood Alcohol Concentration), ‰ BAC, mg / l or mg / 100 ml, useful when you are in a foreign country that uses detection parameters other than Italian ones.
In any case, it should take a few seconds to detect the amount of alcohol in the blood, and almost all models are equipped with an acoustic and visual alarm that warns the user if the previously set values have been exceeded. Finally, alcohol testers with the automatic switch-off function, to maximize battery life, are to be preferred.
Bluetooth
Driving safety is paramount, especially when going out in the evening and pulling your elbow a little. In addition to personal safety and that of others, you were driving. At the same time, intoxicated can lead to very high fines and the withdrawal of a license, in some cases, even criminal trials.
So getting a reliable breathalyzer like this can be the right solution. It is equipped with a Bluetooth connection, thanks to which it will be able to communicate with your smartphone for precise data visualization.
By downloading the free app on your smartphone, you can access all the information detected, so on display, it will be much clearer to check whether you are fit for driving or not. The breathalyzer does not have an LCD screen, so the only way to verify the information is to use the smartphone, a feature that in some cases can be limiting especially in situations where the battery is low or at the limit.
Information
Although for some, it is not exactly the maximum of comfort, the breathalyzer in question can provide a truly remarkable number of information that, in some cases, can save you a lot of trouble.
For example, with a particular algorithm, the breathalyzer is able even to calculate the recovery time that you will use to eliminate alcohol from the body and thus resume driving. Ideal if you are away from home and the taxi is out of the question, wait for the indicated time to pass, and you can safely get behind the wheel.
Speaking of taxis, in case you have exceeded the alcohol content permitted by law, the breathalyzer app will offer you the number of taxi companies in the city where you are. Finally, there is also the possibility of storing measurements and that of looking for a restaurant to have a bite to eat.
Design
The product has an ergonomic and compact design, ideal for storing it in the car dashboard, bag, or jacket pocket without cluttering too much. You can easily hold it in one hand; it also does not need to be recharged and will not even use that of the smartphone.
A beneficial idea that eliminates the need to carry yet another charger. In the package, you will find 50 spare spouts that can cover a reasonable period before having to be repurchased.
How to Use a Breathalyzer?
Get Behind the Wheel Sober
Calculating the ethanolamine ratio is essential before driving, not only to avoid severe penalties but also to preserve one’s own and others’ safety. Having one of these devices during the wildest evenings can help you keep an eye on the amount of alcohol you ingest.
It is possible to find different types, based on the sensor they are equipped with: semiconductor, electrochemical, and infrared. Those on the market, and at low cost, fall into the first category. They have a limited duration and are influenced by humidity and pollution. Usually, the manufacturer indicates the maximum number of uses before replacing the sensor or the entire device.
Tolerance Rate
Compared to those used by law enforcement agencies, which are much more expensive, they are more imprecise and have a decidedly high tolerance rate that must not exceed ± 10%. The returned value must, therefore, be taken with pliers and try to avoid getting behind the wheel if you fall slightly within the threshold allowed by the traffic regulations.
How to Use?
The use is straightforward, turn on the detector, wait for it to be ready, and when you receive the go-ahead via sound alarm or display, you can blow into the appropriate mouthpiece.
After a few seconds, the ethanol rate will be shown on the appropriate display or the proper phone app, if the breathalyzer communicates via Bluetooth with the smartphone.
If the device exceeds the legal threshold, depending on the model, it may emit audible and luminous warnings to attract your attention and advise you to wait before getting behind the wheel.
Purchase Additional Spouts
If you are in the company and want to perform an alcohol test on your friends to choose a sober driver, we recommend that you have additional plastic spouts, possibly sealed and disposable. This way, you don’t have to share yours and risk distorting the results. You can find for sale different models that offer practical cases to always keep in the car to perform the test at any time.