These two databases contain full text articles about companies in scholarly journals and industry magazines.
"mercury analyzer" (air samples)
"conductivity meter" (water samples)
"gas chromatograph-mass spectrometer" (water contaminants)
"sample water analysis report” (web site:.edu or site:.gov)
groundwater and (test* or analysis or assessment)
"well water" (as subject)
"water analysis" and instrument*
"instrumentation industry" and "water analysis"