(a) “Alcohol concentration” means:
(1) The number of grams of alcohol per 100 milliliters of blood; or
(2) The number of grams of alcohol per 210 liters of breath.
(b) If the alcohol concentration is indicated in the number of milligrams of alcohol per deciliter of blood or the number of milligrams of alcohol per 100 milliliters of blood, a court or an administrative law judge, as the case may be, shall convert the measurement into the number of grams of alcohol per 100 milliliters of blood by dividing the measurement by 1000.