> 1 cubic metre = 1000 litres
>
> I think they are therefore interchangeable.
>
> Harry
>
Only if it is pure water, at the right temperature.
This definition of a litre is defined by the substance- pure water, and
temperature of the water, because water expands and contracts with
temperature. (Sorry I cannot recall the standard temperature.)
Close, but not quite the same when other liquids or temperatures are
involved.
Ellen