Dear all,

I am having a difficulty with scientific units when writing some technical
reports. The problem is that sometimes a unit such as (mg mm-3 or mg L-1)
with -3 and -1 as superscripts is being splitted at the end of a sentence
leaving half of the unit (e.g. mg) at the end of the sentence and the other
half at the begining of the following line (e.g. L-1) which looks very ugly.
Sometimes you can change the word ordering to avoid this but it does not
works like that all the time. Any suggestions?

Many Thanks,
Imad