packages containing dangerous goods packed in conformity with the provisions of part 3, chapter 4 of the icao technical instructions may bear the mark shown in figure 3.4.8.1 to certify conformity with these provisions:
figure 3.4.8.1
mark for packages containing limited quantities conforming to part 3, chapter 4 of the icao technical instructions
the mark shall be readily visible, legible and able to withstand open weather exposure without a substantial reduction in effectiveness.
the mark shall be in the form of a square set at an angle of 45° (diamond-shaped). the top and bottom portions and the surrounding line shall be black. the centre area shall be white or a suitable contrasting background. the minimum dimensions shall be 100 mm x 100 mm and the minimum width of the line forming the diamond shall be 2 mm. the symbol "y" shall be placed in the centre of the mark and shall be clearly visible. where dimensions are not specified, all features shall be in approximate proportion to those shown.