Breathalyzer

Breathalyzers, PBT, PAS, and BAT

Understanding Alcohol Screening

Since 1953, Dräger has been a leader in developing reliable alcohol detection tools designed to meet the needs of law enforcement, workplace safety programs, and personal use. Whether it’s roadside screenings, ensuring compliance in safety-critical industries, or making informed decisions at home, Dräger provides trusted devices backed by decades of expertise.This guide breaks down essential terms and applications in breath alcohol testing, helping you choose the right tools for accurate, efficient, and compliant solutions. From understanding the science of alcohol detection to selecting the best device for your specific needs, this resource equips you to make confident and informed decisions. 

Where Are Alcohol Testing Tools Used?

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Law Enforcement

Employed by police officers for roadside sobriety checks, alcohol screening aids public safety measures by identifying drivers under the influence of alcohol.

Learn more about Dräger’s Law Enforcement Solutions

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Workplace Safety

In safety-critical industries like transportation and construction, alcohol testing ensures employees are fit for duty, meeting DOT standards and protecting teams.

Visit our DOT Compliance page to see how Dräger supports safety-sensitive workplaces

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Personal Screening

Personal-use breathalyzers offer a reliable, user-friendly way to monitor alcohol levels at home, supporting informed decisions about safe driving and activities.

Shop Dräger’s personal-use breathalyzers on Amazon

What is BAC (Blood Alcohol Concentration)?

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Blood Alcohol Concentration (BAC) is a measure of the amount of alcohol in your bloodstream. It’s typically expressed as a percentage, such as 0.08%, which means 0.08 grams of alcohol per 100 milliliters of blood. BAC is the standard way to assess alcohol impairment for driving, workplace safety, and other activities. This is possible because the alcohol in your bloodstream passes into your lungs and is exhaled, allowing the device to calculate BAC with precision.

Several factors can influence BAC levels, including, but not limited to:

  • Body Weight: Larger individuals tend to have lower BAC levels for the same amount of alcohol.
  • Gender: On average, women experience higher BAC levels than men after consuming the same amount of alcohol.
  • Rate of Consumption: Drinking quickly causes BAC to rise faster than drinking slowly.
  • Food Intake: Drinking on an empty stomach results in higher BAC levels compared to drinking after a meal. 

What is a Breathalyzer?

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A breathalyzer is a broad term for any device used to measure the amount of alcohol in someone’s breath. It calculates the BAC, giving a quick and non-invasive way to check if a person has consumed too much alcohol to safely drive, work, or perform other tasks. Unlike blood tests, they don’t require needles or special facilities, making them a convenient option for on-the-spot testing.

Breathalyzers are crucial for:

  • Road Safety: Law enforcement uses them during traffic stops to prevent accidents caused by drunk driving.
  • Workplace Safety: Companies in industries like transportation and manufacturing use breathalyzers to ensure employees are alcohol-free on the job.
  • Personal Responsibility: Individuals can use breathalyzers to monitor their own alcohol levels before making decisions like driving.

What is a PBT (Preliminary Breath Test)?

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A Preliminary Breath Test (PBT) is a type of portable breathalyzer designed for quick alcohol screening. In some cases, the term PAS (Portable Alcohol Screener) is also used to describe these devices. Both terms refer to compact, easy-to-use equipment designed to provide accurate and immediate results, ensuring safety and compliance in critical environments. 

These devices are commonly used by police officers during roadside stops or by employers for on-site safety checks. While they provide an accurate initial reading, these results are seldom used as conclusive evidence in U.S. courts. Their purpose is to give a quick snapshot of alcohol levels to help determine the next investigative steps.

  • PBTs are valuable because they:
    Provide immediate results to determine if further testing is needed.
  • Help law enforcement and employers make quick decisions in the field.
  • Promote safety by identifying alcohol impairment before it leads to incidents.

Who is a BAT (Breath Alcohol Technician)?

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A Breath Alcohol Technician (BAT) is a trained professional responsible for conducting breath alcohol tests, usually as part of workplace safety programs or regulatory compliance requirements. Unlike users of breathalyzers or PBTs, BATs are certified to perform tests according to specific rules. This makes their role critical in regulated industries like transportation, where accuracy and compliance are essential.

BATs ensure alcohol testing is done properly, which is especially important for:

  • Workplace Compliance: Ensuring companies meet U.S. Department of Transportation (DOT) standards for alcohol testing.
  • Accurate Results: Following strict procedures to avoid mistakes that could invalidate a test.
  • Fair Testing: Providing consistent testing processes for everyone.

Get Started With Dräger

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With over 70 years of experience, Dräger is a trusted name in alcohol detection. Our solutions include:

  • Personal Breathalyzers: For responsible alcohol monitoring at home.
  • Portable PBTs: Quick and easy-to-use field-ready tools for law enforcement and workplaces.
  • Professional Devices for BATs: Engineered to support DOT-regulated industries with critical precision and full compliance.


Ready to find the right alcohol testing solution for your needs? Contact us today to learn more or request a demo. 

Get in touch with Dräger

Contact Us Safety

Draeger, Inc. – Safety

7256 S. Sam Houston W Pkwy., Suite 100
Houston, TX 77085

1-800-437-2437
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6 Products
Breathalyzer - Dräger Alcotest 7000

Dräger Alcotest 7000

  • Professional breathalyser, offers 2 measuring methods
  • Only 1 calibration/year
  • Wide temperature- and measuring range
  • Networked solutions
  • Particularly hygienic ...

Breathalyzer - Dräger Alcotest® 4000

Dräger Alcotest® 4000

- Small and compact breathalyzer for responsible drivers
- Precise measurement technology identical to police use
- Ready to drive assurance
- Replaceable mouthpiece

Breathalyzer - Dräger Alcotest® 5000

Dräger Alcotest® 5000

  • Professional detection of alcohol: YES/NO
  • High-speed, up to 12 tests per minute
  • Special funnel for contactless, hygienic use

Breathalyzer - Dräger Alcotest® 6000

Dräger Alcotest® 6000

  • Basic breath-alcohol tester for professional use
  • Compact and precise
  • Robust design, easy to operate, and hygienic
  • Data memory for up to 500 tests

Breathalyzer - Dräger Alcotest® 6820 for DOT

Dräger Alcotest® 6820 for DOT

The Dräger Alcotest® 6820 for DOT provides fast and accurate alcohol test results. This reliable breathalyzer makes it easy to follow DOT breath test protocol. In workplaces regulated by the US Department of ...

Breathalyzer - Dräger Alcotest® 7000 for workplace testing applications

Dräger Alcotest® 7000 for workplace testing applications

The Dräger Alcotest® 7000 for DOT provides fast and accurate alcohol test results. This reliable breathalyzer makes it easy to follow workplace breath test protocols, including DOT procedures outlined in 49 CFR Part ...

Get in touch with Dräger

Contact Us Safety

Draeger, Inc. – Safety

7256 S. Sam Houston W Pkwy., Suite 100
Houston, TX 77085

1-800-437-2437