chemical preparation, namely, silica for use in chromatographic separations in research and in the chemical and biotechnology industries

Columns, namely, chromatographic columns; chromatography columns for use in chromatographic analysis in the laboratory; chromatography columns for use in chromatographic separation, in the laboratory for industrial purposes; chromatography columns for use in chromatographic separation for research in the laboratory in the chemical and biotechnology industries

Columns, namely, chromatographic columns for laboratory use; chromatography columns for use in chromatographic analysis in the laboratory; chromatography columns for use in chromatographic separation in the laboratory; chromatography columns for use in chromatographic separation for research in the laboratory in the chemical and biotechnology industries

ELECTRICAL SENSORS, NAMELY, ELECTRONIC COMPONENTS FOR SENSING GAS AND LIQUID PRESSURE