(a) A licensee shall maintain records relating to the sale of his or her goods and services and, upon request, shall make such records available to the Director for review. A licensee shall maintain records required to be kept under this section for a period of at least seven years from the date of the sale.

(b) A licensee shall make the testing equipment available for periodic inspection by the Director or the Director's designee, and shall have all testing equipment calibrated annually by the manufacturer or a qualified testing service in accordance with American National Standards Institute specifications.

(c) The Director shall adopt rules implementing the provisions of this section. (Added 1989, No. 60, § 1; amended 1989, No. 250 (Adj. Sess.), § 4(d).)