Except for packages containing Class 1 goods only or Class 7 goods only, if wooden or fibreboard boxes are used as outer packagings, a package containing different goods packed together shall not weigh more than 100 kg.

Unless otherwise prescribed by a special provision applicable according to 4.1.10.4, dangerous goods of the same class and the same classification code may be packed together.

When indicated for a given entry in Column (9b) of Table A of Chapter 3.2, the following special provisions shall apply to the mixed packing of the goods assigned to that entry with other goods in the same package.

MP 1 May only be packed together with goods of the same type within the same compatibility group.

MP 2 Shall not be packed together with other goods.

MP 3 Mixed packing of UN No. 1873 with UN No. 1802 is permitted.

MP 4 Shall not be packed together with goods of other classes or with goods which are not subject to the requirements of ADR. However, if this organic peroxide is a hardener or compound system for Class 3 substances, mixed packing is permitted with these substances of Class 3.

MP 5 UN No. 2814 and UN No. 2900 may be packed together in a combination packaging in conformity with packing instruction P620. They shall not be packed together with other goods; this does not apply to UN No. 3373 Biological substance, Category B packed in accordance with packing instruction P650 or to substances added as coolants, e.g. ice, dry ice or refrigerated liquid nitrogen.

MP 6 Shall not be packed together with other goods. This does not apply to substances added as coolants, e.g. ice, dry ice or refrigerated liquid nitrogen.

MP 7 May - in quantities not exceeding 5 litres per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 8 May - in quantities not exceeding 3 litres per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 9 May be packed together in an outer packaging for combination packagings in accordance with 6.1.4.21:

with other goods of Class 2;

with goods of other classes, when the mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 10 May - in quantities not exceeding 5 kg per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes or with goods of other classes, when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 11 May - in quantities not exceeding 5 kg per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes or with goods of other classes (except substances of packing group I or II of Class 5.1) when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 12 May - in quantities not exceeding 5 kg per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes or with goods of other classes (except substances of packing group I or II of Class 5.1) when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

Packagings shall not weigh more than 45 kg. If fibreboard boxes are used as outer packagings however, a package shall not weigh more than 27 kg.

MP 13 May - in quantities not exceeding 3 kg per inner packaging and per package - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes or with goods of other classes, when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 14 May - in quantities not exceeding 6 kg per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes or with goods of other classes, when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 15 May - in quantities not exceeding 3 litres per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes or with goods of other classes, when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 16 (Reserved)

MP 17 May - in quantities not exceeding 0.5 litre per inner packaging and 1 litre per package - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of other classes, except Class 7, when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 18 May - in quantities not exceeding 0.5 kg per inner packaging and 1 kg per package - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of other classes, except Class 7, when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 19 May - in quantities not exceeding 5 litres per inner packaging - be packed together in a combination packaging conforming to 6.1.4.21:

with goods of the same class covered by other classification codes or with goods of other classes, when mixed packing is also permitted for these; or

with goods which are not subject to the requirements of ADR, provided they do not react dangerously with one another.

MP 20 May be packed together with substances covered by the same UN number.

Shall not be packed together with goods of Class 1 having different UN numbers, except if provided for by special provision MP 24.

Shall not be packed together with goods of other classes or with goods which are not subject to the requirements of ADR.

MP 21 May be packed together with articles covered by the same UN number. Shall not be packed together with goods of Class 1 having different UN numbers,
except for:
(a) their own means of initiation, provided that
(i) the means of initiation will not function under normal conditions of carriage; or
(ii) such means have at least two effective protective features which prevent explosion of an article in the event of accidental functioning of the means
of initiation; or
(iii) when such means do not have two effective protective features (i.e. means of initiation assigned to compatibility group B), in the opinion of the
competent authority of the country of origin3, the accidental functioning of the means of initiation does not cause the explosion of an article under
normal conditions of carriage;
(b) articles of compatibility groups C, D and E.
Shall not be packed together with goods of other classes or with goods which are not subject to the requirements of ADR.
When goods are packed together in accordance with this special provision, account shall be taken of a possible amendment of the classification of packages in accordance with 2.2.1.1. For the description of the goods in the transport document, see 5.4.1.2.1 (b).

3 If the country of origin is not a Contracting Party to ADR, the approval shall require validation by the competent authority of the first country Contracting Party to ADR reached by the consignment.

MP 22 May be packed together with articles covered by the same UN number. Shall not be packed together with goods of Class 1 having different UN numbers, except

(a) With their own means of initiation, provided that the means of initiation will not function under normal conditions of carriage; or

(b) With articles of compatibility groups C, D and E; or

(c) If provided for by special provision MP 24.

Shall not be packed together with goods of other classes or with goods which are not subject to the requirements of ADR.

When goods are packed together in accordance with this special provision, account shall be taken of a possible amendment of the classification of packages in accordance with 2.2.1.1. For the description of the goods in the transport document, see 5.4.1.2.1 (b).

MP 23 May be packed together with articles covered by the same UN number. Shall not be packed together with goods of Class 1 having different UN numbers, except

(a) With their own means of initiation, provided that the means of initiation will not function under normal conditions of carriage; or

(b) If provided for by special provision MP 24.

Shall not be packed together with goods of other classes or with goods which are not subject to the requirements of ADR.

When goods are packed together in accordance with this special provision, account shall be taken of a possible amendment of the classification of packages in accordance with 2.2.1.1. For the description of the goods in the transport document, see 5.4.1.2.1 (b).

MP 24 May be packed together with goods with the UN numbers shown in the table below, under the following conditions:

if a letter A is indicated in the table, the goods with those UN numbers may be included in the same package without any special limitation of mass;

if a letter B is indicated in the table, the goods with those UN numbers may be included in the same package up to a total mass of 50 kg of explosive substances.

When goods are packed together in accordance with this special provision, account shall be taken of a possible amendment of the classification of packages in accordance with 2.2.1.1. For the description of the goods in the transport document, see 5.4.1.2.1 (b).

This section provides general provisions applicable to the use of portable tanks for the carriage of substances of Classes 1, 3, 4.1, 4.2, 4.3, 5.1, 5.2, 6.1, 6.2, 7, 8 and 9. In addition to these general provisions, portable tanks shall conform to the design, construction, inspection and testing requirements detailed in 6.7.2. Substances shall be carried in portable tanks conforming to the applicable portable tank instruction identified in Column (10) of the Table A of Chapter 3.2 and described in 4.2.5.2.6 (T1 to T23) and the portable tank special provisions assigned to each substance in Column (11) of Table A of Chapter 3.2 and described in 4.2.5.3.

During carriage, portable tanks shall be adequately protected against damage to the shell and service equipment resulting from lateral and longitudinal impact and overturning. If the shell and service equipment are so constructed as to withstand impact or overturning it need not be protected in this way. Examples of such protection are given in 6.7.2.17.5.

Certain substances are chemically unstable. They are accepted for carriage only when the necessary steps have been taken to prevent their dangerous decomposition, transformation or polymerization during carriage. To this end, care shall in particular be taken to ensure that shells do not contain any substances liable to promote these reactions.

The temperature of the outer surface of the shell excluding openings and their closures or of the thermal insulation shall not exceed 70 °C during carriage. When necessary, the shell shall be thermally insulated.

Empty portable tanks not cleaned and not gas-free shall comply with the same provisions as portable tanks filled with the previous substance.

Substances shall not be carried in the same or in adjoining compartments of shells when they may react dangerously with each other (see definition for "dangerous reaction" in 1.2.1).

The design approval certificate, the test report and the certificate showing the results of the initial inspection and test for each portable tank issued by the competent authority or its authorized body shall be retained by the authority or body and the owner. Owners shall be able to provide this documentation upon the request of any competent authority.

Unless the name of the substance(s) being carried appears on the metal plate described in 6.7.2.20.2 a copy of the certificate specified in 6.7.2.18.1 shall be made available upon the request of a competent authority or its authorized body and readily provided by the consignor, consignee or agent, as appropriate.

Prior to filling, the consignor shall ensure that the appropriate portable tank is used and that the portable tank is not filled with substances which in contact with the materials of the shell, gaskets, service equipment and any protective linings, are likely to react dangerously with them to form dangerous products or appreciably weaken these materials. The consignor may need to consult the

manufacturer of the substance in conjunction with the competent authority for guidance on the compatibility of the substance with the portable tank materials.