Laboratory apparatus and instruments, namely, liquid chromatographs, gas chromatographs, mass spectrometers, liquid chromatography-mass spectrometers and spectrophotometers; Scientific and laboratory apparatus and instruments including parts therefor, namely, liquid chromatographs, gas chromatographs, mass spectrometers, liquid chromatography-mass spectrometers and spectrophotometers; recorded software for controlling and analyzing liquid chromatography, gas chromatography, mass spectrometry,...