Precision Scientific Model 28

The Precision Scientific Model 28 is a laboratory heating and incubation instrument engineered for precise temperature control in biological and chemical research, quality control, and analytical workflows. Available in multiple configurations—gravity convection incubators, mechanical convection ovens, and water baths—the Model 28 delivers stable thermal environments with exceptional uniformity. The seamless stainless steel chamber resists contamination, while the epoxy powder-coated steel exterior provides outstanding chemical and corrosion resistance. Equipped with either hydraulic or digital microprocessor temperature control, the instrument maintains setpoint stability to within ±0.05–0.5 °C depending on model variant and operating temperature. Auto-on and auto-off timers, dual thermostats, over-temperature safety circuitry, and audible alarms ensure safe, unattended operation.

– Technical Specifications

• Temperature Range: Up to 200 °C (gravity convection ovens/incubators)
• Temperature Uniformity: ±0.05–0.5 °C at 100 °C; ±0.2 °C at 37 °C (water bath)
• Temperature Sensitivity: ±0.05–0.5 °C
• Chamber Volume: 28 L (water bath variant)
• Chamber Dimensions: 19″ × 19″ × 23″ (gravity convection); 19″ × 19″ × 19″ (compact oven); 15.4″ × 21.8″ × 11.1″ (water bath internal)
• Convection Type: Gravity or mechanical convection
• Chamber Material: Seamless stainless steel
• Exterior: Epoxy powder-coated steel
• Control Systems: Hydraulic thermostat or digital microprocessor controller
• Power Supply: 100–115 V or 200–230 V, 50/60 Hz
• Amperage: 4.3–20.8 A (varies by model and voltage)
• Safety Features: Over-temperature circuitry, factory-set hi-limit thermostat, dual thermostats (selected models), audible alarms

– Key Features

• Precision temperature control with hydraulic or microprocessor regulation
• Auto-on/auto-off timer functionality
• LED display or calibrated control dial
• Supplied power cord with 3-prong polarized plug (hard-wiring available for larger units)

– Typical Applications

• Biological and chemical research requiring stable incubation
• Quality control testing and validation
• Sample preparation and thermal processing
• Culture maintenance and environmental testing

– Compatibility & Integration

Electrical requirements vary by model. Standard units operate on 100–115 V or 200–230 V AC, 50/60 Hz. Larger oven configurations may require installation by a qualified electrician.