IEC 61300-3-35:2009(E) describes methods for quantitatively assessing the endface quality of a polished fibre optic connector. The information is intended for use with other standards which set requirements for allowable surface defects such as scratches, pits and debris which may affect optical performance. In general, the methods described in this standard apply to 125 m cladding fibres contained within a ferrule and intended for use with sources of 2 W of input power. This standard replaces IEC/PAS 61300-3-35 which was published in 2002.