An outer packaging may contain more than one item of dangerous goods or other goods provided that:
(a) the dangerous goods do not react dangerously with each other and cause:
and/or evolution of considerable heat,
evolution of flammable, toxic or asphyxiant gases,
the formation of corrosive substances, or
the formation of unstable substances;
(b) the dangerous goods do not require segregation according to Table 9.3.A, except as otherwise provided for in these Regulations;
(c) an outer packaging containing Division 6.2 (Infectious Substances) may contain material for refrigeration or freezing or packaging material such as absorbent material as provided in Packing Instruction 602;
(d) the inner packaging used for each item of dangerous goods and the quantity contained therein complies with the relevant part of the packing instruction applicable to that item;
(e) the outer packagings used are permitted by all the packing instructions applicable to each item of dangerous goods;
(f) the package as prepared for shipment meets the specification performance tests for the most restrictive packing group of a substance or article contained in the package;
(g) the quantities of different dangerous goods contained in one outer packaging must be such that “Q” does not exceed the value of 1, where “Q” is calculated using the formula:
where n1, n2, etc. are the net quantities per package of the different dangerous goods and M1, M2, etc. are the maximum net quantities per package for these different dangerous goods according to the List of Dangerous Goods, for passenger or cargo aircraft, as applicable; and
(h) the following dangerous goods do not need to be taken into account in the calculation of the “Q” value:
•Carbon dioxide, solid (dry ice) UN 1845;
•those where Columns H, J and L of the List of Dangerous Goods indicate “No limit”;
•those with the same UN number, packing group and physical state (i.e. solid or liquid), provided they are the only dangerous goods in the package and the total net quantity does not exceed the maximum net quantity shown in the List of Dangerous Goods.
Notes
1. For packages containing radioactive material, see Subsection 10.5.
2. The calculated “Q” value must be rounded up to the first decimal place and entered on the Shipper's Declaration (see 8.1.6.9.2(f)).