An apparatus for metering printing ink includes an ink fountain roller, an ink fountain and a mounting for the ink fountain. This invention also relates to an oral suspension which comprises a n-propanol solvate of non-dihydrate azithromycin and an aqueous vehicle. The area for the protection of the thorax includes an upper section. A user interface screen is extracted from the application model. The second periodic samples may also be phase shifted relative to the first periodic samples. In one embodiment a method of revamping an existing styrene production facility by adding one or more microreactors capable of reacting toluene with methane to produce a product stream comprising ethylbenzene andor styrene is disclosed.