In Formular (D.1) to (D.3) it is assumed that reproducibility has been estimated in accordance with ISO 4259 and that the certified value of the CRM, or the assigned value of the SWS, has been obtained by the procedures set out in ISO Guide 35 and that its uncertainty is small in comparsion with the standard deviation of the test method and thus small compared with the reproducibility of the test method, R.