1
Chemicals for use in industry and science, namely, gases and mixtures of gases for use in calibration and testing
7
Electric pumps for metering gases and liquids; pump diaphragms; valves for pumps; pressure reducers; needle valves for pumps for use in the control of the flow of fluids; diaphragm valves for pumps for use in the control of the flow of fluids; blowing machines for the compression, exhaustion and transport of gases; gas compressors; mechanical mixing devices for the production of mixtures of gases for calibration and testing; separators for use with liquids and solids for the processing of gases
9
Sensors for collecting and analyzing physical and chemical quantities in gases and liquids, gas sensors for measuring gas contents, gas concentrations and gas compositions; measuring and testing equipment for measuring and analyzing of gas contents, gas concentrations, gas compositions and ingredients of gases and liquids; separators for the cleaning and purification of liquids and gases; condensers for gases
11
Gas regulators for use in regulating heating and cooling of gases; electric vaporizers; diffusers for use in the production of test gases; gas permeation cells for use in the production of test gases; gas diffusers for use in the production of test gases
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