University of Southern Indiana

Forms Library

Vendor Registration

Change Order Request

(For internal USI Departments only)

Construction Project Notification

(For internal USI Departments only)

Purchasing Card Request

(For internal USI Departments only)

Independent Contractor or Employee Payment Determination

(For USI Procurement staff only)

W9 Form

Certificate of Insurance

PO Terms and Conditions

Sole Source/Single Source

When to use the Sole Source/Single Source Form: 

In accordance with University policy, any requisition totaling $25,000 or
more that has not been competitively bid must be accompanied by a sole
source/single source justification form. All sole source/single source transactions are subject to
review and audit by internal audit, state examiners, and other governing

A sole source/single source justification cannot be based on price. A sole source/single source
purchase must be based on the requestor’s investigation and evaluation
of the requested product and its availability (or lack of availability) from
multiple sources. The sole source/single source justification form must be completed
and signed by the requestor and the appropriate financial manager.
Signatures initialed by designees will not be accepted.

Sole Source/Single Source Rationale:

• It has been determined through market research and/or discussions with other individuals using this product that the requested product is the only one of its type and functionality and is only available from the vendor (or manufacturer)

• The product requested has unique functionality or features that are required for the type of research for which it will be used

• The vendor or manufacturer is the sole source from which to purchase the product(s)

• The requested product is an integral repair part or accessory compatible with existing equipment

• The requested product is essential in maintaining experimental continuity

• Other investigators have used this product in similar research, and it is required for comparability of results

• The use of the requested product/equipment has been standardized and the use of another would jeopardize the validity of results

• The requested product/equipment has unique design/performance specifications which are essential to research protocol or other needs are not available in comparable products    


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