Invariably, once a food product has been through a manufacturing process, little can be done to alter its quality. Thus examination of finished products only permits acceptance of material reaching the desired standard and rejection of material which fails to reach this standard. Such a process is therefore one of inspection and not one of control. It can be claimed that if control of raw materials and control of process is perfect, the final product will not require inspection. However, in practice it is seldom possible to guarantee complete control over raw materials and processing conditions and thus a greater or lesser degree of finished product inspection will be necessary, depending on circumstances within the factory. it is economically desirable to concentrate on ensuring that inspection (and rejection) at the finished product stage is reduced to a nominal level by effective raw material and process controls.