Thermolyne VWR Model 300 Laboratory Hot Plate Ceramic Top Bench Scientific

Thermolyne VWR Model 300 Laboratory Hot Plate Ceramic Top Bench Scientific

The Thermolyne VWR Model 300 is a benchtop heat-only laboratory hot plate made by Thermolyne Corporation (a subsidiary of Sybron Corporation, Dubuque, Iowa). It features a ceramic-coated top plate and a simple analog rotary HEAT control, designed for routine laboratory heating tasks where a stable, controllable heat surface is needed without magnetic stirring. This is a heat-only unit — it does not include a stir function.

Specifications & What's Included

• Brand: Thermolyne Corporation (marketed as VWR Model 300)
• Model: Model 300
• Top surface: Ceramic-coated plate
• Control: Single analog rotary HEAT dial on front panel
• Function: Heat only — no magnetic stirrer
• Form factor: Benchtop, compact rectangular housing
• Housing: Blue painted metal enclosure
• Electrical specs: Voltage, wattage, amperage, and phase not legible — rating plate label on base is obscured by corrosion damage
• Power cord: Standard 2-prong US power cord, attached
• Rear panel: Three small terminal connections visible
• Manufacturer: Thermolyne Corporation, Subsidiary of Sybron Corporation, Dubuque, Iowa, U.S.A.
• Included: Hot plate unit with attached power cord only — no accessories

Applications

Thermolyne hot plates like the Model 300 are standard benchtop heating instruments in chemistry, biology, and general research laboratories. They are used for tasks such as heating solutions, maintaining reaction temperatures, evaporating solvents, and warming glassware. Heat-only hot plates (without a stir motor) are common in settings where simple, reliable thermal control is needed without the complexity of combined stir-heat units. The Thermolyne 300 series dates from the era when Thermolyne Corporation was a well-known U.S. scientific instrument maker operating under the Sybron Corporation umbrella — a period roughly spanning the 1970s through the 1990s. These units were found in university labs, industrial QC benches, and research facilities across North America. Comparable hot plates of this type remain in active use in labs today for basic heating tasks.