Intox Flashcards
Definition of the Intox EC/IR II
An approved instrument which analyzes samples of deep lung air and reports the results in milligrams of alcohol in 100 millilitres of blood.
Henry’s Law
At a given temperature saturated vapour above a solution contains a concentration of solute proportional to the concentration of the solute in the solution.
3 factors that affect breath test results.
Breath temperature, mouth alcohol, and shallow blow.
Margin of acceptability
10% of the target value
Two analytical techniques
Infrared and fuel cell
Infrared (IR)
Residual alcohol in the mouth
Fuel cell (EC)
Blood alcohol content
Instrument display
Menu, status, operating conditions, warnings
Pressure sensor tubing functions
Monitors flow rate
Monitors ambient atmospheric pressure
RFI protection
Faraday cage over circuit board
Metal box over instrument
Sample acceptance criteria
- Minimum flow rate of 12L/min
- Minimum volume of 1.5L
- 5% drop in flow after minimum volume reached
Criteria for PBT
- Two diagnostic tests have passed
- Two suitable samples which agree within 20mg% of each other
- Two alcohol standard tests within 10% of the target value
Simulator temp range
33.8-34.2*C
Types of Logs
Personal
Instrument usage
Maintenance
Alcohol standard change
Breath test bulletins
4 factors that affect absorption
- Amount of food in the stomach
- Concentration of alcohol in the beverage
- Rate of consumption
- Drugs, diseases, and emotional states
Two forms of elimination
Metabolism (90-98%) and excretion (2-10%)
Rate of elimination
Average of 15mg%/hr
Impairment
Less than 100mg%
Intoxication
100-250mg%
Severe intoxication
250-400mg%
Death
400mg% or greater
