The same applies where the quality control of the finished product depends on in-process control tests, particularly if the substance is essentially defined by its manufacturing method.
Is amhlaidh an cás má tá rialú cáilíochta an táirge chríochnaithe ag brath ar thástálacha rialaithe le linn próisis, go háirithe i gcás ina bhfuil an tsubstaint sainithe go bunúsach ag an a modh monaraíochta.