Alcotester
The breathalyzers we sell come with electrochemical sensors, so their accuracy is quite accurate. The breathalyzers on sale are semi-professional, so you get a standards-compliant breathalyzer regardless of its price. The key to choosing an breathalyzer is how often and where you use it.
So if your breathalyzer is needed for personal use, you can choose between the BACscan F-50 and Alcovisor® MARS BT breathalyzers. The latter has a better sensor and a memory for recording tests performed.
Yes, this is necessary to ensure correct breathalyzer readings.
It is recommended that the breathalyzer be calibrated at least once a year.
Some breathalysers have a feature that tells you when to calibrate.
It is recommended that the breathalyzer be used after drinking, eating, or smoking for at least 20 minutes prior to testing. It takes about as long for alcohol to enter the bloodstream. It is not recommended to use an alcohol tester immediately after drinking alcohol, as concentrated alcohol vapor in your mouth may damage the alcohol tester.
Probably not, as poor breathalyzer readings can be due to discharged batteries, so it is very important to maintain and replace the batteries from time to time.