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The Intox EC/IR II employs two distinct analytical techniques to measure alcohol concentration. The EC/IR II uses a fuel cell (electro chemical) sensor and an infrared sensor. The instrument uses both of these techniques because each offers different advantages to the sampling process.

The electro-chemical method, also called the fuel cell method, converts ethanol and oxygen into acetic acid and water. The process creates an electrical current proportional to the concentration of alcohol in the blood, which can then be measured.

This test uses infrared lights called infrared spectroscopy (referred to as the IR result). The machine purges itself of the air sample and gets ready for the second breath sample from the suspect. This testing process results in 4 BAC readings – 2 EC results and 2 IR results.

EC stands for electro-chemical and IR stands for infra-red. These are two very different methods of measuring ethanol. The infra-red method relies on the absorption of infra-red light by alcohol in the sample chamber which is noted by a detector at the opposite end of the chamber.

Function keys also used to perform specific commands. F1 Prints a copy of the last test. F5 Resets the instrument back to scrolling DFS, date, and time.

The Intox EC/IR II employs two distinct analytical techniques to measure alcohol concentration. The EC/IR II uses a fuel cell (electro chemical) sensor and an infrared sensor. The instrument uses both of these techniques because each offers different advantages to the sampling process.

No breath test instrument is expected to be completely accurate and precise all the time. The margin of acceptability for the Intox EC/IR II is an alcohol standard result within 10% of the target value of the alcohol standard.

Function keys also used to perform specific commands. F1 Prints a copy of the last test. F5 Resets the instrument back to scrolling DFS, date, and time.