An outstanding Florida dui lawyer from the Essen law firm knows many ways to attack the results of alcohol related tests in order to defend your case. A Florida criminal defense dui lawyer can argue that the Law Enforcement Officer (LEO) did not carefully observe you for the period required by law, attacking the manner, method and time of calibration of the machine, the number and proximity of drunk driving breath tests, the quality of materials used in the machine, any repairs made to the machine, the blood/breath ratio, whether the driver was on the ‘rise’ etc. There are many more opportunities for a thoroughly knowledgeable Florida dui lawyer to explore to defend DWI cases.