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Laboratory Apparatus and Instruments-Namely, Heating Mantles, Switches, Power and Energy Regulators-Namely, Thyristor Power Controllers, Thermostats, Temperature Controllers, Thermometers, Melting-Point Determination Apparatus, Stirrers, Laboratory Wax Dispensers, Kjeldahl Sampling Units, Laboratory Extraction Apparatus for Testing, Mounting Baths, Evaporator Baths, Slide Drying Benches, Electric Bunsen Burners, Immersion Heaters for Laboratory Use, and Reed Relays and Parts and Fittings Therefor

Installations for Heating Purposes-Namely, Thermoelectric Heating Elements, Amoured Thermoelectric Heating Tapes and Cords, Armoured and Flexible Ceramic and Non-Ceramic Heaters, Channel Heaters, Junction Heaters, Pipe Heaters and Drum Heaters