As used in this chapter:

1. (A) "Order" means a copy of a contract or a statement of the nature of a contemplated expenditure, a description of the property or supplies to be purchased or service to be performed, other than a service performed by officers and regular employees of the state, and per diem of the national guard, and the total sum of the expenditure to be made therefor, if the sum is fixed and ascertained, otherwise the estimated sum thereof, and an authorization to pay for the contemplated expenditure, signed by the person instructed and authorized to pay upon receipt of a proper invoice.

2. (B) "Invoice" means an itemized listing showing delivery of the supplies or performance of the service described in the order including all of the following:

   1. (1) The date of the purchase or rendering of the service;
   2. (2) An itemization of the things done, material supplied, or labor furnished;
   3. (3) The sum due pursuant to the contract or obligation.
3. (C) "Products" means materials, manufacturer's supplies, merchandise, goods, wares, and foodstuffs.
4. (D) "Produced" means the manufacturing, processing, mining, developing, and making of a thing into a new article with a distinct character in use through the application of input, within the state, of Ohio products, labor, skill, or other services. "Produced" does not include the mere assembling or putting together of non-Ohio products or materials.
5. (E) "Ohio products" means products that are mined, excavated, produced, manufactured, raised, or grown in the state by a person where the input of Ohio products, labor, skill, or other services constitutes no less than twenty-five per cent of the manufactured cost. With respect to mined products, such products shall be mined or excavated in this state.
6. (F) "Purchase" means to buy, rent, lease, lease purchase, or otherwise acquire supplies or services. "Purchase" also includes all functions that pertain to the obtaining of supplies or services, including description of requirements, selection and solicitation of sources, preparation and award of contracts, all phases of contract administration, and receipt and acceptance of the supplies and services and payment for them.
7. (G) "Services" means the furnishing of labor, time, or effort by a person, not involving the delivery of a specific end product other than a report which, if provided, is merely incidental to the required performance. "Services" does not include services furnished pursuant to employment agreements or collective bargaining agreements.
8. (H) "Supplies" means all property, including, but not limited to, equipment, materials, other tangible assets, and insurance, but excluding real property or an interest in real property.

9. (I) "Competitive selection" means any of the following procedures for making purchases:

   1. (1) Competitive sealed bidding under section 125.07 of the Revised Code;
   2. (2) Competitive sealed proposals under section 125.071 of the Revised Code;
   3. (3) Reverse auctions under section 125.072 of the Revised Code.