Automatic Digital Refractometer
Precision automatic refractometer with artificial sapphire prism, Peltier temperature control (±0.02°C accuracy), and 8-inch touchscreen interface for accurate refractive index measurements.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Automation Level
- Semi-automated
- Audit Trail
- Optional
- Thermostatical Control Range
- 5~85℃
- Temperature Control Accuracy
- ±0.02℃
- Temperature Control Mode
- Peltier(Built-in )
- Interface
- USB/Keyboard/Mouse/Universal Printer/Ethernet/Optional: WLAN
Automatic Digital Refractometer (BK-R756)
Professional laboratory refractometer for precise measurement of refractive index and Brix values in liquids. Features automatic temperature compensation and digital display for consistent, accurate readings across a wide range of applications including food, beverage, chemical, and pharmaceutical industries.
Key Features:
- Automatic temperature compensation (ATC)
- Digital LCD display
- Wide measurement range
- Fast measurement time
- User-friendly interface
- Durable construction
How It Works
Refractometry operates on the principle of measuring the critical angle at which total internal reflection occurs when light passes from a sample into a prism of known refractive index. The instrument directs light through the sample-prism interface, where the refractive index difference creates a distinct boundary between light and dark regions on the detector. The position of this boundary corresponds directly to the sample's refractive index.
The artificial sapphire prism provides exceptional optical clarity and chemical resistance while maintaining stable optical properties across the temperature range. The integrated Peltier temperature control system maintains precise sample temperature (±0.02°C accuracy) throughout the 5-85°C range, as refractive index measurements are highly temperature-dependent. Digital sensors continuously monitor both the optical boundary position and sample temperature, automatically applying temperature compensation algorithms to provide accurate readings.
The 8-inch color touchscreen displays real-time measurements, temperature data, and measurement history. Internal data processing converts the optical measurements into standard refractive index units, with results stored in the 16GB internal memory and available for export through multiple interface options including USB, Ethernet, and optional wireless connectivity.
Features & Benefits
Research record
Use these values in methods sections and data records.
- Device type
- Refractometer
NCIT:C78809
This ID comes from the NCI Thesaurus (NCIT).
Download the source data for this record as a JSON-LD file
Methods section wording
refractometer (ConductScience, Skokie, IL, USA; cat. no. BIO-0469)
Automation Level
- semi-automated
Audit Trail
- Optional
Thermostatical Control Range
- 5~85℃
Temperature Control Accuracy
- ±0.02℃
Temperature Control Mode
- Peltier(Built-in )
Interface
- USB/Keyboard/Mouse/Universal Printer/Ethernet/Optional: WLAN
Data Storage
- 16G
Prism
- Artifical sapphire
Package Size
- 570*460*300mm
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Clinical Diagnostics
- Environmental Monitoring
- Food Science
- Materials Science
- Pharmaceutical QC
Temperature Range
- Temperature display range: 0~100℃
Display Type
- 8 inch color touch screen
Power/Voltage
- 100V~240V, 50/60Hz, 150W
Weight
- 5kg
Shipping weight
- 5.0 lb
Shipping box
- L: 30.0 cm
- W: 57.0 cm
- H: 46.0 cm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Prism Material | Artificial sapphire prism | Entry-level models commonly use glass prisms | Sapphire provides superior chemical resistance and optical stability for demanding laboratory applications. |
| Temperature Control | Peltier control with ±0.02°C accuracy, 5-85°C range | Basic models often lack active temperature control | Precise temperature regulation ensures accurate measurements across varying ambient conditions. |
| Display Interface | 8-inch color touchscreen | Smaller displays or basic LCD screens are common | Large touchscreen interface improves data visualization and simplifies method setup and measurement review. |
| Connectivity Options | USB/Ethernet/Optional WLAN/Printer support | Limited connectivity options in basic instruments | Multiple interface options enable seamless integration with laboratory data management systems. |
| Data Storage | 16GB internal storage | Limited or no internal storage in entry-level models | Extensive storage capacity supports comprehensive measurement history and audit trail requirements. |
| Temperature Monitoring Range | 0-100°C display range | Narrower temperature monitoring ranges | Extended monitoring range accommodates diverse sample types and measurement protocols requiring temperature documentation. |
This refractometer offers artificial sapphire prism technology, precise Peltier temperature control, and comprehensive connectivity options. The 8-inch touchscreen interface and 16GB data storage provide enhanced usability and data management capabilities for demanding laboratory applications.
Practical Tips
Perform calibration with certified reference standards at the same temperature as your sample measurements.
Why: Temperature-matched calibration eliminates potential sources of measurement error from thermal effects.
Clean the artificial sapphire prism surface with appropriate solvents and lint-free wipes after each measurement session.
Why: Residual sample contamination can affect subsequent measurements and potentially damage the optical surface.
Allow the Peltier temperature control system to reach thermal equilibrium before starting measurements.
Why: Temperature stability ensures consistent measurement accuracy and reduces thermal drift during analysis.
Record ambient laboratory temperature and humidity conditions along with measurements.
Why: Environmental conditions can influence sample properties and provide context for measurement validation.
If measurements appear inconsistent, verify the prism surface is clean and free from air bubbles in the sample.
Why: Optical interference from contamination or air bubbles is the most common cause of measurement variability.
Ensure adequate ventilation when measuring volatile samples, especially at elevated temperatures.
Why: Sample volatilization increases at higher temperatures and may pose inhalation hazards or affect measurement accuracy.
Use the 16GB internal storage to maintain measurement logs and calibration records for traceability.
Why: Comprehensive record keeping supports data integrity and regulatory compliance requirements.
Verify temperature control accuracy periodically using certified thermometer standards.
Why: Temperature control accuracy directly affects measurement quality and should be validated as part of regular maintenance.
Setup Guide
What’s in the Box
- Automatic Digital Refractometer main unit
- Power cord and adapter
- USB communication cable
- Sample pipettes and cleaning materials (typical)
- Calibration reference standards (typical)
- User manual and software documentation
- Calibration certificate (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with comprehensive technical support for installation, calibration, and operational guidance throughout the warranty period.
Compliance
What is the measurement accuracy and precision of this refractometer?
Temperature control accuracy is specified as ±0.02°C across the 5-85°C range. Optical measurement precision depends on sample properties and measurement conditions - consult product datasheet for specific refractive index accuracy specifications.
What sample volume is required for measurement?
Sample volume requirements depend on the prism design and measurement chamber configuration. Consult product datasheet for specific volume requirements and sample application procedures.
How frequently should the instrument be calibrated?
Calibration frequency depends on usage intensity, sample types, and laboratory quality requirements. The artificial sapphire prism provides long-term stability, but regular calibration with certified reference standards is recommended for critical applications.
What data formats are available for export?
The instrument supports multiple connectivity options including USB, Ethernet, and optional wireless networking. Specific data export formats and compatibility with laboratory information management systems should be confirmed from the product datasheet.
Can the instrument handle corrosive or high-temperature samples?
The artificial sapphire prism provides excellent chemical resistance to most laboratory solvents and reagents. Temperature control operates within 5-85°C range with monitoring up to 100°C - verify chemical compatibility for specific sample types.
What maintenance is required for the Peltier temperature control system?
Peltier systems require minimal maintenance but benefit from regular cleaning of heat exchanger surfaces and verification of temperature calibration. Consult maintenance guidelines for specific service intervals.
How does this compare to traditional Abbe refractometers?
This digital system provides automated measurement, precise temperature control, and data logging capabilities versus manual Abbe refractometers. The artificial sapphire prism offers superior durability compared to traditional glass prisms.
What is the measurement range for refractive index?
The specific refractive index measurement range is not provided in the available specifications. Consult the product datasheet for complete measurement range, resolution, and accuracy specifications for different sample types.
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