Except for purchases from the Stock Supplies Fund, all purchases, rentals, and contracts shall be made only upon proper written requisitions, the form of which shall be supplied by the Purchasing Agent to the several offices of the County. No purchase order shall be issued until the Chief Financial Officer shall have certified that sufficient money is available in the proper budgeted fund of the department to pay for the purchase. The head of any County office, department, or institution, or his duly designated assistant, is hereby authorized to draw requisitions for purchases for such office, department, or institution in accordance with current budget accounts. Such head may delegate such authority to one or more of his deputies, assistants, or employees within the department by filing a written authorization therefor with the Purchasing Agent and the Chief Financial Officer. (§ 2, Ord. 1551, eff. September 29, 2022)