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Large packagings. Large packagings means packagings consisting of an outer packaging which contains articles of inner packagings and which:

1. are designed for mechanical handling; and

2. exceed 400 kg net mass or 450l capacity but have a volume of not more than 3 m3.

Latent period. The time that elapses between exposure and the first manifestation of damage.

LC50Lethal concentration that will kill 50 percent of the test animals within a specified time. See LD50.

LD50The dose required to produce the death in 50 percent of the exposed species within a specified time.

Liner. Liner means a separate tube or bag inserted into a packaging (including IBCs and large packagings), but not forming an integral part of it, including the closures of its openings.

Liquids means, unless there is an explicit or implicit indication to the contrary, dangerous goods with a melting point or initial melting point of 20 ℃ or lower at a pressure of 101.3 kPa. A viscous substance for which a specific melting point cannot be determined should be subjected to the ASTM D 4359-90 test, or to the test for determining fluidity (penetrometer test) prescribed in Appendix A.3 of Annex A of the European Agreement concerning the International Transport of Dangerous Goods by Road (ADR) with the modifications that the penetrometer should conform to ISO 2137:1985 and that the test should be used for viscous substances of any class

Loader. Any enterprise which loads dangerous goods into a vehicle or large container.

Long international voyage. Long international voyage means an international voyage that is not a short international voyage.

Lower explosive limit (LEL). The lower limit of flammability of a gas or vapor at ordinary ambient temperatures expressed in percent of the gas or vapor in air by volume. This limit is assumed constant for temperatures up to 120oC (250oF). Above this, it should be decreased by a factor of 0.7 because explosibility increases with higher temperatures.