netherlands

What Type foundry is this font from?

I became curious with this very neutral grotesque
looking at the sourcecode of the following site http://www.escola-aberta-rio.com/pt/#
i discovered that the font is called Mercator LB Regular, but i couldn' t find any font simillar to it in google, only a serifed from linotype that has nothing to do with it...
Radim Pesko is one of the teachers of the course of the site so maybe it is a guess...
Anyone have any idea where do i buy this font? Which Typefoundrie?
Thanks in advance...