When solids that are not dangerous goods and liquids included in Class 8, Corrosives, are in a mixture, the mixture may be handled, offered for transport or transported under this shipping name without the tests and criteria for including substances in Class 8, Corrosives, first being applied, if
there is no free liquid visible at the time the mixture is loaded into a means of containment or at the time the means of containment is closed; and
each means of containment is leakproof.