Читать книгу Handbook of Plastics Testing and Failure Analysis - Vishu Shah - Страница 17

There are many reasons for writing specifications, but the major reason is to help the purchasing department purchase equipment, materials, and products on an equal basis. The specifications, generally written by the engineering department, allow the purchasing agent to meet requirements and ensure that the material received at different times is within the specified limits (5). The specifications are intended to ensure batch‐to‐batch uniformity, as well as remove confusion between the purchaser and supplier—we all know that more often than not, what is provided by the supplier is not what is expected by the purchaser.