The general provisions of 4.1.1 and 4.1.3 shall be met.

Inner packagings made of paper or fibre shall not be used when the substances being carried may become liquid during carriage.
Inner packagings made of plastics, paper or fibre shall be sift-proof.
Large outer packagings made of flexible plastics (51H) shall be used with flexible inner packagings only.

Maximum capacity: 3 m³

Special packing provision LL 1 specific to RID:
For UN 3509, large packagings are not required to meet the requirements of 4.1.1.3.

Large packagings meeting the requirements of 6.6.4, made leak tight or fitted with a leak tight and puncture resistant sealed liner or bag, shall be used.

When the only residues are solids which are not liable to become liquid at temperatures likely to be encountered during carriage, flexible large packagings may be used.

When liquid residues are present, rigid large packagings that provide a means of retention (e.g. absorbent material) shall be used.

Before being filled and handed over for carriage, every large packaging shall be inspected to ensure that it is free from corrosion, contamination or other damage. Any large packaging showing signs of reduced strength shall no longer be used (minor dents and scratches are not considered as reducing the strength of the large packaging).

Large packagings intended for the carriage of packagings, discarded, empty, uncleaned with residues of Class 5.1 shall be so constructed or adapted that the goods cannot come into contact with wood or any other combustible material.