Question : How can I learn to operate a breathalyzer in one day?
I’m a jailer at a county jail and I put in for a pay raise based on a breathalyzer certification course that I did not attend! Now the jail supervisor needs me to run the machine myself for tomorrow’s Safe & Sober Campaign. I agreed to do it but I have never even seen the machine in operation. It’s a three day course and you have to sign up several months in advance.
breathalyzer

Best answer:

Answer by Jerdy
you can`t!