Standard examinations for the determination of competency of mechanical heating, ventilation and air conditioning contractors and master and journeyman heating, ventilation and air conditioning mechanics, as promulgated or administered, or both, by the international code council (ICC), the international association of plumbing and mechanical officials (IAPMO) or Prometric, a current subsidiary of educational testing services in effect on July 1, 2008, are hereby designated as the standard examinations for determining the qualification of persons seeking licensure as mechanical heating, ventilation and air conditioning contractors and master and journeyman heating, ventilation and air conditioning mechanics, for the purposes of this act.