Chemical testing might have a variety of purposes, such as to:
* Determine if, or verify that, the requirements of a specification, regulation, or contract are met
* Decide if a new product development program is on track: Demonstrate proof of concept
* Demonstrate the utility of a proposed patent
* Determine the interactions of a sample with other known substances
* Determine the composition of a sample
* Provide standard data for other scientific, medical, and Quality assurance functions
* Validate suitability for end-use
* Provide a basis for  Technical communication
* Provide a technical means of comparison of several options
* Provide evidence in legal proceedings