N.J. Stat. Ann. § 18A:18A-44

All goods and services provided or performed under contract shall be inspected by the purchasing agent of the district, if there be a purchasing agent of the district, but if there be no purchasing agent of the district, they may be inspected by an appropriate officer employed by the board to whom such power shall have been delegated by the board, and subject to the approval of the board the purchasing agent or such officer, as the case may be, shall condemn any goods or services which in his judgment do not conform to the specifications of the contract therefor.