Title 62 Procurement (Pa.C.S.A.)
Part I Commonwealth Procurement Code
Chapter 19 Intergovernmental Relations
62 Pa.C.S.A. § 1901. Definitions

The following words and phrases when used in this chapter shall have the meanings given to them in this section unless the context clearly indicates otherwise:

"Cooperative purchasing." Procurement conducted by or on behalf of more than one public procurement unit or by a public procurement unit with an external procurement activity.

"External procurement activity." A buying organization not located in this Commonwealth which if located in this Commonwealth would qualify as a public procurement unit. An agency of the United States is an external procurement activity. 

"Local public procurement unit." A political subdivision, public authority, educational, health or other institution and, to the extent provided by law, any other entity, including a council of governments or an area government, which expends public funds for the procurement of supplies, services and construction, any nonprofit corporation operating a charitable hospital and any nonprofit fire company, nonprofit rescue company and nonprofit ambulance company. 

"Public procurement unit." A local public procurement unit or a purchasing agency.

62 Pa.C.S.A. § 1902. Cooperative purchasing authorized

A public procurement unit may either participate in, sponsor, conduct or administer a cooperative purchasing agreement for the procurement of any supplies, services or construction with one or more public procurement units or external procurement activities in accordance with an agreement entered into between the participants. Cooperative purchasing may include, but is not limited to, joint or multiparty contracts between public procurement units and open-ended purchasing agency contracts which are made available to local public procurement units.