Thermostatic Water Bath BK-WB Series
Thermostatic water bath BK-WB Series available in five models (3.5–26 L, 300–1800 W), with RT+5–99.9 °C range, ±0.5 °C precision, LED display, anti-dry protection, and adjustable ring cover with hidden stretch drain.
Louise Corscadden, PhD
Director of Science · ConductScience
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The Thermostatic Water Bath BK-WB Series is designed for distillation, drying, concentration, temperature staining, biochemical experiments, constant temperature culture, and sterilization in university, research, and industrial laboratories. Five models cover 3.5 L to 26 L, with 304 stainless steel tanks, adjustable ring covers, real-time temperature display with countdown capability, and a hidden stretch drain for convenient water removal.
Technical Specifications
| Model | Capacity | Power |
|---|---|---|
| BK-WB1 | 3.5 L | 300 W |
| BK-WB2 | 6.8 L | 600 W |
| BK-WB4 | 13 L | 800 W |
| BK-WB6 | 20 L | 1200 W |
| BK-WB8 | 26 L | 1800 W |
| Common Parameters | Value |
|---|---|
| Temperature Range | RT+5–99.9 °C |
| Temperature Precision | 0.1 °C |
| Temperature Fluctuation | ±0.5 °C |
| Temperature Uniformity | ±0.5 °C |
| Timing Range | 1–999 min |
| Display | LED |
| Anti-dry Protection | Standard |
| Tank Material | 304 stainless steel |
| Power Supply | AC 220 V, 50/60 Hz (AC 110 V optional) |
Key Features
- Five models from 3.5 L to 26 L for diverse throughput needs
- 304 stainless steel tank for corrosion resistance and easy cleaning
- Adjustable ring cover accommodates various vessel sizes
- Real-time temperature display with countdown capability
- Hidden stretch drain for convenient water removal
- Standard anti-dry protection
How It Works
The thermostatic water bath operates through controlled resistive heating elements submerged in the water reservoir, with temperature feedback provided by precision sensors. The thermostat continuously monitors water temperature and modulates heating element power to maintain the setpoint within ±0.5°C. Convection currents generated by strategic heater placement ensure uniform temperature distribution throughout the bath volume.
The timing function allows for automated heating cycles, while the LED display provides real-time temperature and remaining time information. Anti-dry protection sensors monitor water levels and automatically shut down heating elements when insufficient water is detected, preventing damage to both the instrument and samples.
Features & Benefits
Automation Level
- semi-automated
BK-WB2
- BK-WB4
BK-WB6
- BK-WB8
6.8L
- 13L
20L
- 26L
Temp. Range
- RT+5~99.9℃
Temp. Precision
- 0.1℃
Temp. Fluctuation
- ±0.5℃
Temp. Uniformity
- ±0.5℃
Timing Range
- 1~999min
Anti-dry Protection
- Standard
Consumption
- 300W
600W
- 800W
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Cell Biology
- Clinical Diagnostics
- Environmental Monitoring
- Microbiology
- Pharmaceutical QC
Capacity
- 3.5L
Display Type
- LED display
Weight
- 2.7 kg
Dimensions
- L: 14.0 mm
- W: 16.0 mm
- H: 16.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Temperature Control Range | RT+5°C to 99.9°C with 0.1°C precision | Basic models often limited to narrower ranges or coarser control | Wide operating range covers most laboratory heating applications with precise temperature control. |
| Temperature Uniformity | ±0.5°C throughout bath volume | Entry-level units may show greater temperature variation | Consistent conditions across all sample positions ensure reproducible results. |
| Capacity Options | Four models from 3.5L to 26L | Limited capacity selection in single-model offerings | Scalable capacity selection matches laboratory throughput and space requirements. |
| Safety Features | Anti-dry protection system standard | Basic models may lack automatic protection features | Prevents equipment damage and ensures safe unattended operation. |
| Display Interface | LED display with temperature and timing | Analog controls or basic digital displays | Clear parameter visibility and timing control improve operational efficiency. |
| Power Scaling | 300W to 800W matched to capacity | Fixed power ratings regardless of capacity | Optimized energy usage and heating performance for each bath size. |
The BK-WB Series offers precise temperature control with ±0.5°C uniformity across four capacity options. The combination of anti-dry protection, LED display interface, and scalable power ratings provides reliable operation for diverse laboratory heating requirements.
Practical Tips
Verify temperature accuracy monthly using a NIST-traceable thermometer placed at the sample working depth.
Why: Ensures continued compliance with the 0.1°C precision specification for critical applications.
Replace water weekly and clean reservoir monthly to prevent mineral deposits and bacterial growth.
Why: Maintains temperature uniformity and prevents contamination of sensitive samples.
Allow 15-20 minutes for temperature equilibration before placing samples, especially after water changes.
Why: Ensures stable operating conditions and prevents temperature shock to sensitive samples.
Position containers to avoid blocking water circulation patterns within the bath.
Why: Maintains uniform temperature distribution and optimal heating performance.
If temperature uniformity decreases, check for mineral buildup on heating elements and clean as needed.
Why: Scale deposits reduce heat transfer efficiency and create hot spots.
Monitor the anti-dry protection system function during extended unattended operations.
Why: Ensures automatic shutdown capability remains active to prevent equipment damage.
Record actual bath temperature alongside sample processing times for experimental documentation.
Why: Provides complete thermal history for reproducible protocol execution and troubleshooting.
Inspect power cord and electrical connections monthly for wear or damage.
Why: Prevents electrical hazards and ensures reliable power delivery for consistent heating performance.
Setup Guide
What’s in the Box
- Thermostatic water bath main unit
- Power cord
- User manual and operating instructions
- Lid/cover (typical)
- Water level indicators (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship. Technical support is available for setup, calibration, and operational guidance throughout the warranty period.
Compliance
What is the temperature stability and how long does it take to reach setpoint?
Temperature stability is ±0.5°C for both uniformity and fluctuation control. Heating time to setpoint depends on capacity and target temperature differential; consult product datasheet for specific heat-up rates.
Can the water bath accommodate different container sizes and shapes?
The open bath design accepts various container geometries up to the capacity limits (3.5L to 26L depending on model). Ensure containers are chemically compatible with water immersion heating.
What maintenance is required for optimal temperature accuracy?
Regular water changes with distilled water prevent mineral buildup. Periodic calibration verification with a traceable thermometer ensures continued accuracy within the 0.1°C precision specification.
How does the anti-dry protection function work?
Built-in sensors monitor water level and automatically shut down heating elements when water drops below safe operating levels, preventing damage to heating components and samples.
Can the timing function operate independently of temperature control?
The timing range of 1-999 minutes operates in conjunction with temperature control for automated heating cycles. Consult product datasheet for specific timing and temperature control interaction modes.
What is the power requirement difference between capacity models?
Power consumption scales with capacity: 300W for smaller models up to 800W for the largest 26L capacity. Ensure electrical supply matches the specific model's power requirements.
Is external temperature monitoring possible for data logging?
The LED display provides temperature readout; consult product datasheet for external monitoring ports or data output capabilities for integration with logging systems.
How does this compare to dry block heaters for sample heating?
Water baths provide more uniform heating for larger sample volumes and irregular container shapes, while dry blocks offer faster heating for standardized tube formats. Choose based on sample volume and container requirements.
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