Dangerous Goods by Road
each ibc manufactured and intended for use according to adr shall bear marks which are durable,
legible and placed in a location so as to be readily visible. letters, numerals and symbols shall
be at least 12 mm high and shall show:
(a) the united nations packaging symbol 
;
;
this symbol shall not be used for any purpose other than certifying that a packaging, a flexible
bulk container, a portable tank or a megc complies with the relevant requirements in chapter
6.1, 6.2, 6.3, 6.5, 6.6, 6.7 or 6.11. for metal ibcs on which the marks are stamped or embossed,
the capital letters "un" may be applied instead of the symbol;
(b) the code designating the type of ibc according to 6.5.1.4;
(c) a capital letter designating the packing group(s) for which the design type has been
approved:
(i) x for packing groups i, ii and iii (ibcs for solids only);
(ii) y for packing groups ii and iii;
(iii) z for packing group iii only;
(d) the month and year (last two digits) of manufacture;
(e) the state authorizing the allocation of the mark; indicated by the distinguishing sign used on
vehicles in international road traffic1;
(f) the name or symbol of the manufacturer and other identification of the ibc as specified by the
competent authority;
(g) the stacking test load in kg. for ibcs not designed for stacking, the figure "0" shall be
shown;
(h) the maximum permissible gross mass in kg.
the primary marks required above shall be applied in the sequence of the subparagraphs above. the
marks required by 6.5.2.2 and any further mark authorized by a competent authority shall still
enable the primary marks to be correctly identified.
each mark applied in accordance with (a) to (h) and with 6.5.2.2 shall be clearly separated, e.g.
by a ace, so as to be easily identifiable.