Working process:

1. Breath Sample Collection – The individual blows into the device, which captures the breath sample.
2. Chemical Reaction or Sensor Analysis – The breathalyzer uses either a fuel cell sensor or an infrared spectrometer to analyze the alcohol content.
3. Blood Alcohol Content (BAC) Calculation – The device calculates the BAC based on the alcohol concentration in the breath.
4. Display of Results – The BAC is displayed on the screen, often with indicators showing whether the level is within legal limits.

Applications:

• Law Enforcement – Used to check drivers for intoxication.
• Workplace Safety – Ensures employees are not under the influence while working.
• Personal Use – Helps individuals monitor their alcohol consumption.
• Medical and Rehabilitation Centres – Used to track alcohol levels in patients undergoing treatment.