Transportation of Dangerous Goods Regulations

4.12 (1) If dangerous goods are in a small means of containment on which the primary class label is displayed, the UN number for the dangerous goods must be displayed

• (a) next to the label; or

• (b) within a white rectangle located on the label without the prefix “UN”, if the white rectangle does not obscure any symbol or text on the label.

(2) If the label is displayed on a tag, the UN number must be displayed on the tag in accordance with paragraph (1)(a) or (b).

(3) For the purposes of paragraph (1)(a), the UN number must be written

• (a) for a means of containment with a capacity of 5 L or less or with a net mass of 5 kg or less, in characters that are visible, legible and sized appropriately for the size of the means of containment;

• (b) for a cylinder with a capacity of 60 L or less and for any other means of containment with a capacity of 30 L or less but more than 5 L or with a net mass of 30 kg or less but more than 5 kg, in characters at least 6 mm high; or

• (c) for all other small means of containment, in characters at least 12 mm high.