A Breathalyser is a wise investment to help ensure the safety of you and those around you. Acohol absorbtion is affected by many factors (such as weight, muscle mass, and recently consumed food or beverages) meaning it’s impossible to accurately gauge intoxication level without a measurement tool like a breathalyser. People are often surprised when they measure their alcohol levels, particularly on different occasions after the same amount of alcohol is consumed
Why do I need a breathalyser?
How does a breathalyser work?
What's the difference between types of breathalyser?
There are two main types of breathalyser:
1. Fuel Cell
2. Semiconductor
Fuel cell breathalysers are used by police forces and for evidential testing due to their accuracy. The fuel cell has two platinum electrodes with a porous acid-electrolyte material sandwiched between them. As the exhaled flows past one side of the fuel cell, the platinum oxidizes any alcohol in the air to produce acetic acid, protons and electrons. The electrons generate an electrical current from which a microprocessor calculates the breath alcohol content.
The materials and precision of construction required for a fuel cell breathalyser results in a higher production cost; but this is offset by increase accuracy.
The most common form of breathalyzer used is the oxide semiconductor breathalyzer. This works by carrying out a redox reaction of ethyl alcohol to acetic acid and water and measuring the current generated as an indication of how much alcohol is being reacted in the breath.
Semiconductor breathalysers, although significantly cheaper than fuel cell ones, can have high levels of accuracy.
