Quality in procurement terms reflects the need for the goods or service to be appropriate to the task they are to perform. While it is important that products are of a high enough standard to carry out the required tasks, it is also important not to over-specify what you need as this can lead to waste and, in some cases, products that will not work. 

For example, a very expensive fountain pen is great when writing by hand but is useless if you are presenting a course and writing on a board or flip chart.