Which statement is true about samples for the intoximeter?

Which statement is true about samples for the intoximeter?

• A. One sample taken in 1 minute within 0.01 BAC
• B. Two samples within two minutes, within 0.02 BAC
• C. Two samples within five minutes, within 0.05 BAC
• D. Two samples within ten minutes, within 0.10 BAC

Answer: (B)

Breath-alcohol readings must be repeatable to be trustworthy, so the test requires two breath samples taken in quick succession and the results to be very close to each other. The correct approach is two samples collected within two minutes, with the two readings not differing by more than 0.02 BAC. This tight timing minimizes changes in BAC due to absorption or metabolism, as well as variations from breathing technique or the device itself, and the small tolerance helps ensure the result is reliable before it’s used for enforcement. A single sample, a longer time between samples, or a looser tolerance could allow meaningful changes or greater measurement error, making the result less credible.

Breath-alcohol readings must be repeatable to be trustworthy, so the test requires two breath samples taken in quick succession and the results to be very close to each other. The correct approach is two samples collected within two minutes, with the two readings not differing by more than 0.02 BAC. This tight timing minimizes changes in BAC due to absorption or metabolism, as well as variations from breathing technique or the device itself, and the small tolerance helps ensure the result is reliable before it’s used for enforcement. A single sample, a longer time between samples, or a looser tolerance could allow meaningful changes or greater measurement error, making the result less credible.