The Contralco Alcohol Breath Tester is an in vitro medical device to semi quantitatively detect the presence of alcohol in the human breath. It is a disposable one screening device for one-time use. The detector is available at detection cutoffs of 0.0510 relative percent Blood Alcohol Concentration (BAC). The device is used only as a screening device and is only an indication of the possible presence of alcohol in the blood of the test subject. Professional drivers, resident or not, but driving in France (or just passing it as transit country), must have, according the local law, breathalyzer with NF norm in their vehicle. Contralco is well known in France by Traffic Police and therefor it is the most common choice for drivers planning to drive in France as a driver. Contralco is well known also by a lot companies as standard control measure for employees. Order is per pack of 10, 50 or 100 pcs. For bulk order please make a quotation.