By Rhys Evans, Managing Director of ALCO-Safe
With the rapid rise of online retail, purchasing workplace operational equipment at the click of a button has become standard practice. Commercial fleet managers, occupational health and safety officers, and private consumers routinely turn to digital marketplaces for convenient solutions.
However, buying a breathalyzer online involves risks that extend far beyond the device itself. The greatest exposure often lies in what happens after the purchase. A consumer-grade unit might feature a sleek casing, Bluetooth connectivity, and hundreds of positive online reviews.
Yet, if it is used to test employees in a South African workplace, those retail features offer no guarantee that the device is fit for purpose. Alcohol testing in a commercial environment demands far more than personal convenience.
The equipment must yield legally defensible results, operators must adhere to strict testing protocols, and every single reading must be backed by a robust evidentiary audit trail.
That is where many online purchases fall short.
What’s inside the device matters
Evidentiary-grade breathalyzers use high-precision electrochemical fuel cell sensors to detect alcohol. The quality of that sensor has a direct bearing on the reliability of the reading. Many cheaper consumer devices sold online rely on semiconductor sensors instead. These are highly susceptible to cross-reactivity from non-alcoholic substances such as menthol, mouthwash, or elevated ketones.
When a test result is intended to support disciplinary action or a summary dismissal, sensor accuracy is non-negotiable. A false positive is not simply an inconvenient reading, it can result in an innocent employee being accused of gross misconduct. Under South African labour law, the employer bears the burden of proving misconduct on a balance of probabilities.
At the Commission for Conciliation, Mediation and Arbitration (CCMA) or the Labour Court, recent rulings have highlighted that breathalyser test results will be scrutinised heavily. An employer may face significant challenges in defending a dismissal if it solely relies on the results of an unverified or low-grade device without supporting evidence.
The device’s appearance or feature list will not defend that process at arbitration.
The person using it matters too
Even high-end equipment may fail to produce defensible results if it is operated incorrectly. Operators must be formally trained to administer tests in accordance with strict operational standards.
This includes knowing how to collect an uncontaminated breath sample, managing waiting periods to prevent residual mouth alcohol from distorting the reading, and ensuring meticulous chain-of-custody documentation.
South African legal precedents make a clear distinction between an employee simply “testing positive for alcohol” and being “under the influence”. Unless an alcohol workplace policy explicitly specifies a justifiable zero-tolerance standard for a high-risk environment, a breathalyser reading alone is often treated as a screening tool rather than absolute proof of impairment.
To uphold a dismissal for being under the influence, employers must present corroborating evidence alongside the breathalyser log. Trained operators know how to complete visual observation checklists, noting physical markers such as slurred speech, bloodshot eyes, unsteady gait, or the smell of alcohol.
Buying a device online rarely includes operator training, which can leave internal staff ill-equipped to build a legally sound evidentiary record.
A breathalyzer needs support after purchase
The purchase price is only one part of the total cost of owning operational alcohol testing equipment. Breathalyzers are precision instruments that drift out of alignment over time. They require periodic servicing and calibration, typically every six to twelve months, depending on usage and manufacturer specifications.
When a dismissal is challenged at the CCMA, the employer must produce a valid, up-to-date calibration certificate for the specific device used on the day of the test. If the device is past its calibration date, or there is no reliable way to verify its calibration history and accuracy, the credibility of the test evidence may be significantly undermined.
Before buying online, ask a critical question: Who will calibrate and service this specific unit in South Africa, and can they issue traceable certificates?
If that answer is unclear, the initial cost saving evaporates the moment a dispute arises.
The paperwork and procedures matter
A test reading does not exist in isolation. To withstand scrutiny during a legal dispute, an employer must demonstrate that:
The testing equipment was appropriate, fully functional, and regularly calibrated by an accredited provider.
The testing officer was properly trained and certified to administer the test.
Clear testing logs, physical observation reports, and chain-of-custody records were maintained.
The employee was offered the procedural right to request a confirmatory re-test or a blood test if they disputed the initial breathalyser result.
Sourcing equipment from an established local partner ensures access to verified serial tracking, calibration records, standard operating procedures, and expert testimony if a case proceeds to formal arbitration. Many online vendors do not provide this level of support or documentation.
Buy the testing process, not just the device
For any South African business, the question should not simply be, “How cheap is this breathalyser?”
It should be, “Can we rely on the device, the person operating it and the process behind the test if that result is challenged at the CCMA?”
That means looking beyond the device itself. Sensor technology, the operating environment, operator training, and calibration and servicing requirements all need to be considered before a purchase is made.
The right hardware is only one part of effective workplace alcohol testing. The support behind it matters too. That includes qualified training, accredited calibration and practical guidance on using the equipment within a sound testing process.
A breathalyzer can be bought online in a few clicks. A defensible workplace testing process takes considerably more than that.
©Higher Education Media Services.