Why is 0.01 often used for zero tolerance testing?
“With a breath test instrument, as long as the sampling was proceeded by a 15 minute deprivation period, results of 0.01 or above , on a properly calibrated instrument, indicates that alcohol is present. This is consistent with the reporting of blood samples. Blood samples are usually reported as a two digit result (.##) therefore , when using blood, 0.01 is the lowest reported result.
