The commissioner of agriculture, markets, and food shall have general authority to administer this chapter and shall adopt rules pursuant to N.H. Rev. Stat. Chapter 541-A for carrying out its provisions. He shall in person or by his deputy or agent have free access at all reasonable hours to any place, building, or vehicle in which maple syrup or honey is sold, offered, or exposed for sale, or exchanged or distributed at retail or wholesale. He shall also have power in person or by his deputy or agent to open any package or container, and may upon tendering the market price take such container and its contents or sample therefrom.