PV

SCIENTIFIC INSTRUMENTS AND APPARATUS-NAMELY, ELECTRONIC INSTRUMENTS AND APPARATUS USED IN THE LABORATORY IN THE ANALYSIS OF BIOCHEMICAL AND CHEMICAL PREPARATIONS; INSTRUMENTS FOR ELECTROPHORESIS, CHROMATOGRAPHY, AND ENZYME MEASUREMENT; TITRATORS, PH METERS, COLOR AND GLOSS REFLECTION METERS, DENSITOMETERS, PHOTOMETERS, COLORIMETERS; FLUORESCENCE METERS; CELLS FOR SPECTROPHOTOMETERS, INTERFERENCE FILTERS AND MINOR MONOCHROMATORS; RECORDERS AND INTEGRATORS USED IN THE LABORATORY TO MONITOR AND RECORD AUTOMATICALLY THE DATA OBTAINED FROM ANALYTICAL LABORATORY APPARATUS