- Svend A. Nielsen A/S
 - Development, production, and sale of electrical heating aggregates and processes. - CEM Corporation
- Instrumentation for microwave chemistry and process control applications. Used for digestion, extraction, sample preparation, moisture/solids analysis, and more.
- Glas-Col Laboratory Products
- Inventor of the electric heating mantle; maker of laboratory heating, mixing, rotating, vortexing, and stirring equipment; controls; and semiconductor heating jackets.
- Linn High Therm GmbH
- Manufacturers of laboratory and industrial furnaces, high frequency heating, microwave heating, sample preparation systems for spectroscopy.
- Milestone Inc.
- Manufactures microwave instruments for digestion, extraction, ashing, and direct mercury analysis.
- Cober Electronics, Inc.
- Industrial and scientific microwave heating equipment.
- Electrothermal
- Manufacturer of quality (ISO9000 approved) laboratory and specialist heating equipment, for over 50 years. Most products CE marked and/or CSA approved. Also supply defence equipment.
- Furnaces Ovens and Baths, Inc.
- Furnaces, ovens, washers, blast cleaning, induction, metallurgical laboratory and heat treating equipment. Buy, sell or trade.
- Protherm Furnaces
- Offers electrical laboratory furnaces.
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