According to CIPS, there are two main types of specification:
- Conformance specification – is more output driven as it outlines the product details exactly which may include the material, dimensions, tolerances, source, ingredients, packaging, storage of the part or material.
- Performance specification – is more output driven in terms of what the part or material must achieve.
Among the four options, only 2. 'Description of the operating environments' and 3.'Chemical formulae' are possible components of a conformance specification.Brand names can be a part of a performance specification, according to a document published by CIPS and NIGP.
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[Reference:, - CIPS study guide page 8-10, - Knowledge Byte - Specification Development, - Principles and Practices of Public Procurement: Specifications, LO 1, AC 1.1, ]
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