| Alcohol is one of the crucial things especially | | | | unabsorbed energy will be detected. The infrared |
| dealing with the driver. It is because at the | | | | absorption occurs more in line with the high level |
| roadside is installed a screening device which is | | | | of ethanol. |
| able to detect the alcohol. If this device then | | | | The process of the test is started through a |
| delivers the positive result, you can have further | | | | sample of an ambient air. It is tested as the blank |
| test which is known as evidential test. It is mostly | | | | check. Then, it is checked for the air/ethanol |
| carried out at the police station. | | | | standard of the sample used. The standard |
| What is screening device? | | | | concentration of the alcohol in a sample is 35 µg |
| Screening device has the design just like | | | | 100 ml air. The samples of the breath are then |
| old-fashioned mobile phones. For the test, you | | | | tested and it is separated by the air sample. The |
| only need to blow into a disposable mouthpiece. | | | | test is ended by a final air and standard check. |
| The whole process of this test is relatively short | | | | If the result of the test from the screening |
| since it only takes a minute. There are four | | | | device and evidential breath testing show 15% |
| categories of the result that this device offers | | | | difference or more or 5 µg, it means that the |
| include "fail", "warn", "pass", and "zero". If you fail | | | | device has made an error message. Therefore, |
| the test, it means that you need to take further | | | | you have to take further test which is known as |
| test, evidential breath test at the police station. | | | | laboratory analysis through your urine or blood. If |
| Evidential breath testing | | | | the two results lie in the range of 40 µg up to |
| Evidential breath testing uses either infrared cell or | | | | 50 µg/100 ml breath, you have a right for blood |
| fuel cell device. An infrared cell works to direct | | | | sample. However, if the result shows larger than |
| the infrared energy via the sample. Then, any | | | | 50 µg/100 ml breath, you can be prosecuted. |