When the class of a substance is uncertain and it is being carried for further testing, a tentative class, proper shipping name and UN number shall be assigned on the basis of the consignor's knowledge of the substance and application of:

(a)    the classification criteria of Chapter 2.2; and
 

(b)    the requirements of this Chapter.

The most severe packing group possible for the proper shipping name chosen shall be used.

Where this provision is used the proper shipping name shall be supplemented with the word "SAMPLE" (e.g., "FLAMMABLE LIQUID, N.O.S., SAMPLE"). In certain instances, where a specific proper shipping name is provided for a sample of a substance considered to meet certain classification criteria (e.g., GAS SAMPLE, NON-PRESSURIZED, FLAMMABLE, UN No. 3167) that proper shipping name shall be used. When an N.O.S. entry is used to carry the sample, the proper shipping name need not be supplemented with the technical name as required by special provision 274 of Chapter 3.3.
 

Samples of the substance shall be carried in accordance with the requirements applicable to the tentative assigned proper shipping name provided:

(a)    The substance is  not considered  to  be a substance  not accepted  for carriage by  sub-sections
2.2.x.2 of Chapter 2.2 or by Chapter 3.2;

(b)    The  substance  is  not  considered  to  meet  the  criteria  for  Class  1  or  considered  to  be    an infectious substance or a radioactive material;

(c)    The substance is in compliance with 2.2.41.1.15 or 2.2.52.1.9 if it is a self-reactive substance  or an organic peroxide, respectively;

(d)    The sample is carried in a combination packaging with a net mass per package not exceeding
2.5 kg; and

(e)    The sample is not packed together with other goods.

Samples of organic substances carrying functional groups listed in tables A6.1 and/or A6.3 in Appendix 6 (Screening Procedures) of the Manual of Tests and Criteria may be carried under UN No. 3224 (self-reactive solid type C) or UN No. 3223 (self-reactive liquid type C), as applicable, of  Class
4.1 provided that:

(a)    The samples do not contain any:

-    Known explosives;

-    Substances showing explosive effects in testing;

-    Compounds designed with the view of producing a practical explosive or pyrotechnic effect; or

-    Components consisting of synthetic precursors of intentional explosives;

(b)    For mixtures, complexes or salts of inorganic oxidizing substances of Class 5.1 with organic material(s), the concentration of the inorganic oxidizing substance is:

-    Less than 15%, by mass, if assigned to packing group I (high hazard) or II (medium hazard); or

-    Less than 30%, by mass, if assigned to packing group III (low hazard);

(c)    Available data do not allow a more precise classification;

(d)    The sample is not packed together with other goods; and

(e)    The sample is packed in accordance with packing instruction P520 and special packing provisions PP94 or PP95 of 4.1.4.1, as applicable.
 

 Articles containing dangerous goods may be classified as otherwise provided by ADR under the proper shipping name for the dangerous goods they contain or in accordance with this section.

For the purposes of this section “article” means machinery, apparatus or other devices containing one or more dangerous goods (or residues thereof) that are an integral element of the article, necessary for its functioning and that cannot be removed for the purpose of carriage.

An inner packaging shall not be an article.
 

Such articles may in addition contain batteries. Lithium batteries that are integral to the article shall be of a type proven to meet the testing requirements of the Manual of Tests and Criteria, part III, sub- section 38.3, except when otherwise specified by ADR (e.g. for pre-production prototype articles containing lithium batteries or for a small production run, consisting of not more than 100 such articles).

This section does not apply to articles for which a more specific proper shipping name already exists in Table A of Chapter 3.2.

This section does not apply to dangerous goods of Class 1, Class 6.2, Class 7 or radioactive material contained in articles.

 Articles containing dangerous goods shall be assigned to the appropriate Class determined by the hazards present using, where applicable, the table of precedence of hazard in 2.1.3.10 for each of the dangerous goods contained in the article. If dangerous goods classified as Class 9 are contained within the article, all other dangerous goods present in the article shall be considered to present a higher hazard.

Subsidiary hazards shall be representative of the primary hazards posed by the other dangerous goods contained within the article. When only one item of dangerous goods is present in the article, the subsidiary hazard(s), if any, shall be the subsidiary hazard(s) identified by the subsidiary hazard label(s) in column (5) of Table A of Chapter 3.2. If the article contains more than one item of dangerous goods and these could react dangerously with one another during carriage, each of the dangerous goods shall be enclosed separately (see 4.1.1.6).