Yes, I ran the instrument through its paces, and then I had Mr. Bagnell blow.
Unfortunately, sir, you didn't blow quite long enough and the instrument wouldn't accept the sample. It has given me an invalid sample test. We might have you start over again. If you want to drink the other half bottle of beer, you're perfectly welcome to do so, and then we can start the testing procedure.
Mr. Chair, I hope to demonstrate how the instrument operates and the external standard feature that checks whether or not the instrument is working properly. Hopefully, we can demonstrate the effects of mouth alcohol on readings.