(a) The Department of Finance shall inspect or authorize the inspection of all deliveries of supplies or contractual services to determine their conformance with the specifications set forth in the order or contract. The Controller shall have the authority to authorize using departments having the staff and facilities for adequate inspection to inspect all deliveries made to them.

(b) The Department of Finance shall have the authority to require chemical and physical tests of samples submitted with bids and samples of deliveries which are necessary to determine their quality and conformance with the specifications. In the performance of such tests, the Department of Finance shall have the authority to make use of laboratory facilities of any using department or of any outside laboratory, and to assess, or pro-rate the assessment of costs for such testing against the using department which is to receive the tested supplies where no provision is made in the contract with the vendor for the vendor to bear such costs.