top of page


Redline Breathalysers are easy to use. Within two minutes, anyone can test whether they are within the legal alcohol limit. Anyone can use the breathalyser without training. Tests are conducted quickly and results are available almost immediately.

Click each image below to view how to product guide:


The tester consists of a small (70 mm) glass tube containing yellow chemicals, which turn green in the presence of alcohol. The length of the green colour change is in proportion to the amount of alcohol. The tube has an arrow indicating the direction in which the breath must be passed and also a red calibration line indicating the legal driving limit.

Inside the tube on either side of the yellow chemicals is a filling of white crystals, which protect the chemicals against moisture and give the product a shelf life of 2 years. This storage Silica Gel is harmless and non- toxic.

A plastic snap-off end cap closes both ends of the tube. A plastic bag containing a neck valve, which measures the volume of breath passed through the tester, accompanies each tester.

The plug of chemicals is located in the tube by means of two resistant sieves.

The size of the plug, the nature of the particles and the chemical impregnation are designed to allow the breath to pass through at the correct rate for any alcohol in the breath to react with the chemicals and change the colour from a yellow to green.

The measuring bag is a critical part of the system as it measures the amount of the breath, which is passed through the tester. The volume is the basis on which the calibration is done.

The US Consumer Product Safety Commission has determined that the Redline product does not indicate any potential hazard or toxicity that would require any specific labeling.

Redline Tester


Consumed alcohol is absorbed through the stomach and digestive tract into the bloodstream, which carries it throughout the body. It affects the central nervous system, especially the brain, impairing such functions as judgment, vision, coordination and reaction ability.

A little known fact is that alcohol does not stimulate - but in fact depresses. The apparent stimulation is caused by the suppression of normal inhibitions. As soon as alcohol enters the bloodstream the body starts to eliminate it at a fairly constant rate, mostly through the liver and the remainder through the lungs, sweat, kidneys etc.

Alcohol affects our vision, judgment, balance and reaction time. Because even one drink can affect you.

There is no way to sober up quickly. It is a fallacy that showers and black coffee will make you sober. Your liver has to dissipate the alcohol in your body, which happens at a rate 0.02 mg per hour." 


Drinking and driving over the legal limit has become a major International priority, especially for South Africa and accidents involving alcohol cost South Africa in excess of R20 billion per year. South Africa has one of the worst safety records in the world so the time has come to start taking responsibility for knowing your alcohol levels before driving a vehicle.

Being caught over the legal driving limit is a criminal offence, and has serious consequences for the public, including jail, deduction of driving points, vehicle confiscation and fines. The only way to know ones alcohol level, is to self-test with a Redline Breathalyser before you drive." 


It is illegal to drive under the influence of alcohol or other drugs.

The maximum blood alcohol limit that is allowed for professional drivers is 0,02 gram per 100 ml of blood and 0,05 for other drivers. Because the printout of a breathalyser is also admissible as evidence in court, drivers can be tried within hours, as there are no court delays waiting for the result of blood tests. The breath-alcohol limit is 0,10 milligram per 1 000 milliliter of breath for professional drivers and 0,24 for all other drivers.

If you are apprehended and found to be over the legal limit, you do not have an option of paying a fine. You will be arrested and taken to a police station, where you will be booked and locked up in a police holding cell with other criminals. You will only be charged hours later, when you are sober. The maximum punishment for drinking and driving is R120 000 and/or 6 years imprisonment. You will get a criminal record, which will count against you for the rest of your life. Your driving licence can also be suspended.

If you are involved in a crash while you are under the influence, it will impact on your insurance payouts. Because you have committed an illegal act by driving under the influence, short-term insurers, life insurers and the Road Accident Fund can refuse to pay out claims." 


The amount of alcohol in the consumed drink.

The volume of drink consumed.

The period over which the drink was consumed.

The rate of absorption.

Any food in the stomach will slow down the rate of absorption. This is especially true of fatty foods and dairy products.

Still drinks are absorbed slower than effervescent drinks.

The size and general state of health of the body. The same amount of alcohol will constitute a higher percentage in a smaller body than a large one because the latter’s body contains more blood and body fluids.

Cold showers, coffee etc. have no effect on the alcohol content in the body and one cannot speed up the body’s elimination of alcohol, the only way of knowing the alcohol level is by self-testing.

bottom of page