(a) The following persons are not required to be licensed under this part and may lawfully possess drug precursors:

1. (1) Physicians;
2. (2) Dentists;
3. (3) Pharmacists;
4. (4) Veterinarians;
5. (5) Podiatrists;
6. (6) An agent of any manufacturer, or wholesaler of any drug precursor, if he or she is acting in the usual course of his or her principal’s business or employment;
7. (7) An employee of a licensed common or contract carrier or licensed warehouseman whose possession of any drug precursor is in the usual course of the licensed common or contract carrier or licensed warehouseman's business;

8. (8) A student enrolled in a college chemistry class for credit if the:

   1. (A) Student’s use of the drug precursor is for a bona fide educational purpose; and
   2. (B) Educational institution otherwise possesses all the necessary licenses required by the Department of Health;
9. (9) Officers or employees of appropriate agencies of federal, state, or local government and law enforcement agencies acting pursuant to their official duties; and
10. (10) Every researcher, including analytical laboratories, experimenting with, studying, or testing any drug analog who is licensed by the department.