11:39 Nov 17, 2011 

Elsewhere, μg is also used. I think I'll ask my client to see if an answer is forthcoming from the end client.

12:37 Nov 16, 2011 

Perhaps this is simply a scanning error then

11:32 Nov 16, 2011 

In case it makes a difference, elsewhere in the general text, ng/g is regularly used.

09:54 Nov 16, 2011 

It could probably be an uncorrect abbreviation for microgram with a mix up of characters as the correct would be 1 µg = 1 milliontedel gram (http://www.denstoredanske.dk/Samfund,_jura_og_politik/Sprog/... And the letter 'µ' is called 'my' in the greek alphabeth, so it does make sense.

09:38 Nov 16, 2011 

Hmmm... Isn't that what 'per unge' indicates? I.e. Poison per chick measured in micrograms?

I am thinking that the fact that it says 'per' and not the correct 'pr.' might indicate that you should not take the text too literally as a whole. Hence, 'myg' may not be written correctly either.

09:32 Nov 16, 2011 

Micrograms was my first thought, but shouldn't a concentration be an amount per something (eg mcg/kg)??

09:10 Nov 16, 2011 

Ah, well, it did seem a bit too obvious. :-)
Could it be a measurement then, as in micron (from the Greek my) grams = mikrogram?

09:03 Nov 16, 2011 

This is to do with birds of prey and rodents and I haven't seen any mention of mosquitos anywhere yet. I wonder if it's an anacronym.