Kevin16587
Pre-takeoff checklist
Getting back to the original question... From what I understand the ones they use in the field can not be calibrated and can not be used as evidence... The field ones as stated are there to give the police further PC to get you to the one they can use for evidence...
That said, in some jurisdictions there a DUI specialized cars or trucks, that have a "hard mounted" machine that can test you right there... think DUI checkpoints.
I have done a fair amount of training to the public regarding this topic and I always end up spending a lot of time talking about it because of all the questions. I realize it can be a bit confusing.
I've never seen the Live PD show but I think the deputy mentioned in the OP either misspoke or was confused about the testing equipment.
The ones used on the side of the road before the arrest are called a preliminary alcohol screening (PAS) device and are considered another field sobriety test used to determine the level of impairment. Their results are admissible in court, but there is no physical sample retained. Those devices are not calibrated by the law enforcement agency. Their accuracy is checked by the agency and if the result is outside established parameters they are sent to a lab that actually changes the calibration. My agency has these available. Note, it says it retains a memory of the result, but there is no printout or sample to retain for later retest. Edit: there is a printer available but it's still not considered evidence. It probably has something to do with certification and/or case law.
http://www.intox.com/p-560-alco-sensor-iv-with-memory.aspx
After the arrest, the person arrested is REQUIRED to provide a sample of their blood alcohol content or BAC. If they choose to provide a breath test they provide two EVIDENTIARY samples of their breath. Their use is very similar to the PAS test but there is a printout that is considered EVIDENCE. Again, the law enforcement agency does not calibrate them, but does check the accuracy. The arrestee is either transported to a facility that has the machine or use a portable one. The portable ones are in a case the size of a medium sized suitcase.
My agency has these >>> https://www.draeger.com/en-us_us/Al...sting/Alcohol-Screening-Devices/Alcotest-7510
The cool thing about the one mentioned above is it can be used as both a PAS and the evidentiary test because it is certified to do so and it produces a printout of the results.
Most officers I know prefer the top mentioned device to use on the side of the road and transport the arrestee to the station to use the the second one for the printout. The intoximeter is smaller and easier to transport in the patrol car.
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