Sec. 7.10. Comptroller's approval of purchase orders

All copies of the purchase orders shall be submitted for prior approval of the Comptroller when the amount of the proposed order or orders exceed $1,000, and is not covered by a contract approved by the Comptroller. The Comptroller's copy only of the purchase order is submitted under the following conditions:

(a) when ordering under a contract previously approved by the Comptroller;

(b) when ordering merchandise from the central stores and State institution industries; and

(c) when ordering merchandise in an amount less than $1,000, except when the rules and regulations of the Office of General Services require bids and additional papers to be filed with the Comptroller.