The Office of Contracting and Procurement, is the City's centralized procurement authority, responsible for the vast majority of the City government's acquisitions and purchases. It is responsible for obtaining the proper equipment, materials, and services needed for the City of Detroit municipal government. All purchases, in accordance with applicable ordinances, rules, and procedures, are done on a bid basis, with the lowest acceptable bid receiving award. Lowest acceptable bids are those that meet the specifications of the bid, at the lowest cost. The Office of Contracting and Procurement will reject all bids that do not meet specifications, regardless of the low bid.