How to use a breathalyzer

It can be beneficial for drivers, both professional and non-professional, as well as their supervisors, to have an understanding of how to use a breathalyzer. This device is employed by law enforcement officials to determine the level of alcohol in an individual’s bloodstream. To prevent any confusion or misunderstandings, it is important to possess some knowledge regarding the proper operation of this device.

Where a breathalyzer is used

A breathalyzer is an instrument used to measure the level of intoxication. It is common knowledge that even a small amount of alcohol can lead to fatigue, drowsiness, and a decrease in alertness. It is evident that an intoxicated individual behind the wheel poses a risk to both themselves and others. As a result, this issue receives special attention, and violations of the law are met with severe penalties. While the primary use of a breathalyzer is by transportation police officers to assess the sobriety of motorists on the road, it is also utilized in various other domains.

1. Transportation organizations test their drivers prior to them embarking on their routes.
2. School bus drivers and other municipal drivers are subject to similar screenings.
3. The device is employed in legal disputes pertaining to intoxication.
4. Periodic checks are required for employees of both public and private companies who deal with harmful and hazardous substances, operate complex machinery, or work in extreme conditions.
5. In addition to that, breathalyzers are necessary for monitoring problem children and teenagers.

Aside from the mentioned fields, the breathalyzer device is also utilized in various other areas. It is particularly useful for drivers, as it’s quite common to find oneself in a situation where they have to operate a vehicle the morning after a celebration. In such cases, it becomes imperative to ensure that there is no alcohol in their bloodstream before hitting the road.

Types of testers

Breathalyzer operates by utilizing sensors that gauge the concentration of alcohol-containing substances in the atmosphere. When an individual consumes alcohol, it circulates through the bloodstream to all parts of the body, including the lungs, and subsequently, traces of alcohol are emitted into the air as the driver exhales. These sensors are categorized into different types.

1. Semiconductor (the least precise), with variations in accuracy of readings reaching up to 20%.
2. Electrochemical (the most accurate data), with an error margin of up to 0.01 ppm or no more than 10% of the final result.
3. Infrared, photometric (they retain their functionality over time and have advantages over the first type), with a breathalyzer error range of approximately 10%.

All devices come in two versions: with and without a mouthpiece. The non-contact models don’t have a mouthpiece and require the user to hold the device about 2 cm away from their mouth and blow into a designated hole.

Important note: Devices without a mouthpiece are considered less reliable because part of the exhaled air gets dispersed, making it impossible to determine the exact level of ethanol accurately.

On the other hand, breathalyzers with a mouthpiece are known as the contact variant. In this case, the user inserts a plastic tube into their lips and blows into it. Since the air is not dispersed, the results are more precise. To maintain hygiene standards, the kit may include multiple replaceable plastic tubes.

How the breathalyzer works

The instructions for operating a breathalyzer device may vary depending on the specific model, but the general process is similar. Here is a step-by-step guide:

1. Power on the device by pressing the designated button.
2. Attach the mouthpiece to the device.
3. Have the person being tested blow into the tube until a double signal is emitted.
4. The device’s processor will calculate the amount of ethanol and display the result on the screen.

Note! The unit of measurement for the indicator may vary depending on the device – it could be in parts per million (ppm), milligrams per liter (mg/l), or fractions of a percent.

In accordance with what has been mentioned previously, the operation principle of the breathalyzer is based on the determination of the ethanol content in the exhaled air by the individual. Utilizing this information, it is possible to ascertain the level of drunkenness following alcohol consumption, as well as the remaining alcohol in the bloodstream if the consumption occurred prior to the intended journey. As the air enters the device, the sensor transmits a signal to a specialized processor, which carries out specific calculations. The sensors themselves analyze the air through different methods:

• The electrochemical sensor tracks the reaction of reagents to the ethanol content;
• The semiconductor sensor analyzes the amount of heat generated by the chemical process that initiates when alcohols are present in the body;
• The infrared sensor captures ethanol vapors.

Acceptable Values

Unique Version:

Displayed in the table below are the various levels of blood alcohol content and the corresponding reactions that can occur within the body.

It is important to take note that a concentration of 3.5 ppm is considered to be a lethal dose for an individual. Depending on the specific device, the result can be shown as numerical values, a change in screen color (green, yellow, red), or indicated by an arrow on the table.

Important! Prior to agreeing to undergo a breathalyzer test, it is crucial for drivers to be aware that Russian law allows for a blood alcohol concentration of 0.365 ppm, which is equivalent to 0.16 ml/liter. In Europe, a concentration of 0.8 ppm is considered to be acceptable.

Why a breathalyzer can give incorrect readings

A scenario arises in which a police officer pulls over a driver and asks him to take a breathalyzer test for alcohol. The driver, confident that he is not at risk because he hasn’t actually consumed any alcohol, agrees to the test. However, to his surprise, the breathalyzer shows the presence of ethanol in his blood. It is crucial to be aware that certain drinks and products can trigger this reaction and produce a false positive result. Additionally, some individuals may have a slightly higher reading due to certain health conditions. To prevent misunderstandings and wrongful punishment, it is important to know what can potentially cause a false reading on the breathalyzer:

• Non-alcoholic beverages (such as kvass or non-alcoholic beer);
• Pharmaceutical products containing alcohol;
• Alcoholic candies (tests have shown that four candies can be detected in the breathalyzer test, but they completely dissipate within one hour of ingestion);
• Fermented beverages, such as kefir or sour milk;
• Raisins or grapes, which can cause fermentation in the stomach;
• Foods like black bread, overripe bananas, oranges, and desserts;
• Frequent use of inhalers;
• A cigarette can increase the breathalyzer reading by two hundredths.

In addition to the above, several factors can also influence breathalyzer results:

• Higher body temperature of the person being tested;
• Genetic variations from the average;
• Fumes from paint products;
• The temperature of the environment where the test is conducted;
• Certain medical conditions, such as diabetes;
• Failure to properly calibrate the breathalyzer device.

Why calibration is carried out

Breathalyzer calibration is a required procedure for multifunction models. Scientific studies have demonstrated that each test on any type of breathalyzer affects the condition of its sensor, reducing its sensitivity. This important point is clearly stated in the device’s description. Another important detail is that the breathalyzer can malfunction and provide inaccurate readings if deliberately exposed to saliva or exhaled tobacco smoke. Typically, the user manual specifies the lifespan of the breathalyzer and provides instructions on when to adjust the sensor’s sensitivity or replace it entirely. Certain models have a built-in self-diagnostic function that alerts users when calibration is necessary.

Models equipped with a semiconductor sensor require testing and sensor replacement after 200-300 checks. This is applicable when professional devices are used 20-30 times per day, and individual devices are used 2-3 times per day. If the frequency of use is significantly lower, then breathalyzer verification and calibration are required once a year. Professional models are sent to specialized metrological services after every 500-1500 uses, depending on the daily usage frequency.

By the way! Repairing a personal breathalyzer can be done independently by simply purchasing a new sensor.

Common myths

Among drivers, there are several myths and misconceptions that sometimes lead them to take the risk of driving after consuming alcohol. Below, you’ll find some of the most common ones. It’s important to familiarize yourself with this list to avoid the unfortunate consequences of losing your driver’s license due to a foolish mistake.

1. One myth is that a breathalyzer will not detect beer, but this is incorrect. Any alcoholic beverage will result in ethanol in the bloodstream.
2. Another misconception is that consuming a large quantity of food can neutralize the effects of alcohol.
3. Belching also does not improve the situation in terms of alcohol content.
4. Using chewing gum, sprays, or aerosols to mask the odor of alcohol cannot eliminate traces of alcoholic beverages.
5. Another false belief is that inserting a battery or a copper coin in the mouth can help deceive breathalyzer tests. However, this is just a silly myth, and if such objects are found in the driver’s mouth, it will undoubtedly raise suspicion from traffic police inspectors.

To conclude, it is important to remember that regardless of how a driver may feel immediately or the next morning after consuming alcohol, it is never worth risking their own life or the lives of others. There are no circumstances in which driving under the influence is necessary or acceptable. The issue at hand is not solely the possibility of getting caught, but also the responsibility and respect for others, as statistically, drunk drivers cause a significantly greater number of fatalities than they suffer themselves.

The most reliable breathalyzers

Alcogran AG-100 Breathalyzer available on Yandex Market

Breathalyzer Airline ALK-D-02 available on Yandex Market

Dingo AT-2026 Breathalyzer available on Yandex Market

Inspector AT600 Breathalyzer available on Yandex Market

AlcoHunter Professional X Breathalyzer available on Yandex Market