This UN number is no longer assigned to a packing group in the Dangerous Goods List as of Amdt. 39-18 of the IMDG Code. According to special provision 251, for the purposes of completion of the dangerous goods transport document as set out in 5.4.1.4.1, the packing group shown on the document shall be the most stringent packing group assigned to any individual substance in the first aid kit. Where the first aid kit contains only dangerous goods to which no packing group is assigned, no packing group need be indicated on the dangerous goods transport document.
For this first aid kit, packing group I applies.