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A Guide to Using the AT198 Alcoblow Device: Ensuring Road Safety

News & Blog

What is the AT198 Alcoblow Device?

The AT198 Alcoblow device is a portable breathalyzer that law enforcement officers use to determine if a person is driving under the influence of alcohol. It operates based on the principle that when alcohol is consumed, it is absorbed into the bloodstream and can be detected in a person’s breath.

Using the AT198 Alcoblow Device

  1. Prepare the Device:
    • Ensure the device is properly charged or has fresh batteries to guarantee accurate readings.
    • Inspect the device for any physical damage or defects before use.
    • Make sure the mouthpiece is clean and free from obstructions.
  2. Pre-Test Instructions:
    • Instruct the subject to abstain from eating, drinking, smoking, or using mouthwash for at least 15 minutes before the test.
    • Ensure the subject does not have any foreign objects (gum, candy, etc.) in their mouth before the test.
  3. Explain the Test:
    • Inform the subject about the purpose of the test and how it works.
    • Let them know that the results may have legal consequences.
  4. Administer the Test:
    • Instruct the subject to take a deep breath and then blow into the device’s mouthpiece with steady and continuous force until the device signals completion.
    • Typically, the device will require a specific volume of breath, so make sure the subject blows with sufficient force.
    • Ensure that the subject does not stop or pause during the test.
  5. Wait for Results:
    • The AT198 Alcoblow device will process the breath sample and display the BAC result on its screen.
    • Most devices provide a numerical reading of the subject’s BAC level, typically expressed as a percentage (e.g., 0.08%).
  6. Interpret the Results:
    • Familiarize yourself with the legal BAC limit in your jurisdiction. In many places, a BAC level above 0.08% is considered illegal.
    • Take appropriate action based on the result. This may include conducting further sobriety tests, making an arrest, or allowing the subject to go on their way.
  7. Document the Test:
    • Record the test result along with the date, time, and location.
    • Ensure the subject’s information is accurately documented for legal purposes.
  8. Maintain and Calibrate the Device:
    • Periodically check the device’s calibration to ensure accuracy.
    • Follow the manufacturer’s guidelines for device maintenance and calibration.


The AT198 Alcoblow device plays a vital role in promoting road safety by identifying individuals who may be driving under the influence of alcohol. Proper and accurate use of this device is crucial for maintaining the integrity of law enforcement efforts and ensuring that legal processes are fair and just. Law enforcement officers should be trained in the correct usage of the AT198 Alcoblow device to minimize errors and uphold the principles of justice and safety on our roads.

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