the adhesive tape used for this test shall be clear in colour with an adhesive strength on steel of at least 9,8 N per 25 mm width when tested in accordance with ISO 29862, Method 1, 180 angle of peel. It shall show no evidence of deterioration and shall be capable of being unwound from the roll at a normal rate of speed without showing evidence of adhesive offsetting, adhesive splitting, or stringing out of adhesive, nor breakage or splitting of the tape backing. The tape shall be free of bare spots or foreign particles or any defect that may affect serviceability or appearance.