(a) For the purpose of enforcing the provisions of chapter 417, chapter 419b, except with regard to permittees holding both a restaurant and a bakery permit and this chapter, the commissioner, or his authorized representative, is authorized (1) to enter, at reasonable times, any factory, warehouse or establishment subject to this chapter, or to enter any vehicle being used to transport or hold food, drugs, devices or cosmetics in intrastate commerce, and (2) to inspect, at reasonable times, such factory, warehouse, establishment or vehicle and all pertinent equipment, finished and unfinished materials, containers, labeling and advertisements, records, files and papers therein.

(b) If an inspection reveals a violation of any provision of this chapter concerning a food factory, food warehouse or food establishment, the commissioner shall notify the owner of such factory, warehouse or establishment of any such violation and his right to a hearing under this section by certified mail within fifteen days of the date of such original inspection. Such owner may contest the violations cited in such notice by requesting a hearing in writing by certified mail within fifteen days of the date of receipt of such notice. The commissioner shall grant such a request and conduct a hearing in accordance with the provisions of chapter 54. The cost of all reinspections necessary to determine compliance with any such provision shall be forty dollars an hour and shall be charged to such owner, except that if the first reinspection following the original inspection indicates compliance with such provision no charge shall be made.

(c) If an inspection reveals a violation of any provision of chapter 417, chapter 419b or this chapter concerning any food, drug, cosmetic or device by any establishment licensed or registered in accordance with the provisions of said chapters, the commissioner may impose a civil penalty of not more than five hundred dollars per separate violation, and suspend or revoke the license or registration of such establishment after notice and a hearing conducted in accordance with the provisions of chapter 54.