High Temperature Thermostatic Circulating Oil/Water Bath
Precision oil/water bath with sealed magnetic pump circulation, stainless steel construction, and six capacity models (5L-100L). Temperature control from ambient to 200°C with ±2.5% accuracy.
Louise Corscadden, PhD
Director of Science · ConductScience
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Overview
High-temperature thermostatic circulating oil/water bath system featuring precise temperature management and sealed magnetic pump circulation. Ideal for laboratory applications requiring stable heating or cooling with temperatures up to 100°C for water bath and 200°C for oil bath modes.
Available Models and Pricing
| Model | Capacity | Heating Power | Price |
|---|---|---|---|
| OB-5L | 5L | 2 kW | $1,399 |
| OB-10L | 10L | 2.8 kW | $1,599 |
| OB-20L | 20L | 3.5 kW | $1,799 |
| OB-30L | 30L | 4 kW | $2,099 |
| OB-50L | 50L | 5 kW | $2,399 |
| OB-100L | 100L | 9 kW | $2,799 |
Key Features
- Compact design with stainless steel inner tank and electrostatic-sprayed outer shell
- Sealed magnetic pump circulation with corrosion-resistant copper interfaces
- Precise temperature control (±2.5% accuracy) with adjustable flow output (15-25 L/min)
- Multiple power supply options: AC 220V/50-60Hz (standard), AC 110V or AC 380V available
- Operating pressure: 1.45 MPa
- Optional explosion-proof motor and electrical components
- Six capacity options from 5L to 100L
Applications
Ideal for chromatography, protein purification, reaction vessel temperature control, analytical chemistry, materials testing, and other laboratory applications requiring stable thermal management.
How It Works
The thermostatic circulating bath operates through a combination of precision heating elements and sealed magnetic pump circulation to maintain uniform temperature distribution. The system uses thermostatic control to regulate heating power (2-5 kW depending on model) while continuously circulating the bath medium through sealed magnetic pumps that eliminate contamination risks and provide consistent flow.
Temperature control is achieved through feedback control systems that monitor bath temperature and adjust heating output to maintain setpoint within ±2.5% accuracy. The circulation system operates at 15-20 L/min flow rate, ensuring rapid thermal equilibration when samples are introduced and eliminating temperature gradients across the working volume.
The dual-mode operation allows use of water for temperatures up to 100°C or specialized thermal fluids for elevated temperatures up to 200°C, with the sealed circulation system preventing fluid degradation and maintaining consistent thermal properties throughout extended operation periods.
Features & Benefits
Automation Level
- semi-automated
OB-10L
- OB-20L
OB-30L
- OB-50L
Liquid Storage Volume(L)
- 5
10
- 20
30
- 50
No-load Max Temperature(℃)
- 200
Heating Power(kw)
- 2
2.8
- 3.5
4
- 5
Pressure
- 1.45MPa
Cycle Way
- Sealed magnetic pump cycles
Flow Rate(L/min)
- 15~20
Temperature Control Range(℃)
- Water Bath: RT-100; Oil Bath: RT-200
Temperature Error
- ≤2.50%
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Cell Biology
- Environmental Monitoring
- Food Science
- Materials Science
- Pharmaceutical QC
Weight
- 29.98 kg
Dimensions
- L: 42.0 mm
- W: 43.6 mm
- H: 38.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Maximum Operating Temperature | 200°C (oil mode), 100°C (water mode) | Standard water baths typically limited to 100°C | Enables high-temperature applications requiring thermal conditions beyond aqueous boiling point |
| Circulation System | Sealed magnetic pump with 15-20 L/min flow rate | Entry-level models often use open impeller systems with lower flow rates | Prevents contamination while maintaining consistent circulation for uniform temperature distribution |
| Operating Pressure | 1.45 MPa circulation pressure | Basic circulation systems typically operate at lower pressures | Maintains effective circulation with high-viscosity thermal fluids and complex sample configurations |
| Temperature Accuracy | ±2.5% across operating range | Standard baths may have wider temperature tolerances | Provides precise thermal control for reproducible experimental conditions |
| Dual Bath Medium Capability | Water and oil bath operation in single unit | Many units are designed for single medium type | Offers operational flexibility for both aqueous and high-temperature organic applications |
This circulating bath system combines high-temperature capability up to 200°C with sealed magnetic pump circulation and precise temperature control. The dual-mode operation and robust circulation system provide operational flexibility for diverse laboratory thermal applications.
Practical Tips
Verify temperature accuracy at multiple points across the working range using a calibrated reference thermometer placed at sample position.
Why: Ensures temperature accuracy is maintained throughout the operational envelope for reliable experimental conditions.
Monitor thermal fluid condition regularly and replace when viscosity or thermal properties show degradation.
Why: Maintains consistent heat transfer characteristics and prevents circulation system performance degradation.
Allow adequate equilibration time after temperature changes, especially when switching between water and oil operation modes.
Why: Ensures complete thermal equilibration and removes residual thermal gradients before critical measurements.
Use appropriate thermal fluid rated for maximum operating temperature and ensure proper ventilation for high-temperature operation.
Why: Prevents thermal fluid breakdown and vapor accumulation that could affect measurement accuracy or safety.
Position temperature sensors at the same depth as samples to ensure accurate thermal condition monitoring.
Why: Accounts for any vertical temperature gradients and provides measurement conditions representative of sample environment.
If temperature stability degrades, check circulation pump operation and fluid level before adjusting control parameters.
Why: Circulation issues are the most common cause of temperature uniformity problems in thermostatic bath systems.
Setup Guide
What’s in the Box
- Thermostatic circulating bath unit
- Circulation pump assembly
- Temperature control system
- Power cord
- Operating manual (typical)
- Temperature calibration certificate (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering parts and labor, with technical support available for installation guidance and troubleshooting assistance.
Compliance
References
Background reading relevant to this product:
What is the temperature stability and uniformity across the bath volume?
The system maintains ±2.5% temperature accuracy with sealed magnetic pump circulation providing 15-20 L/min flow rate to ensure uniform temperature distribution throughout the working volume.
Can the same unit be used for both aqueous and high-temperature applications?
Yes, the dual-mode design operates as a water bath up to 100°C and oil bath up to 200°C, requiring only bath medium change between applications.
What circulation pressure is available for viscous thermal fluids?
The sealed magnetic pump system operates at 1.45 MPa pressure, maintaining effective circulation even with high-viscosity thermal oils at elevated temperatures.
How quickly does the system reach target temperature?
Thermal response depends on model size and target temperature; heating power ranges from 2-5 kW providing rapid thermal recovery when samples are introduced.
What maintenance is required for the circulation system?
The sealed magnetic pump design minimizes maintenance requirements; regular bath fluid monitoring and periodic system cleaning are the primary maintenance needs.
Are there capacity options available for different experimental scales?
Multiple models are available with working volumes of 5L, 10L, 20L, 30L, and 50L to accommodate various experimental requirements.
What safety features are included for high-temperature operation?
Consult product datasheet for specific safety features; sealed circulation system prevents fluid contact with heating elements and reduces thermal fluid degradation.
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