Benchtop Conductivity Meter
Precision benchtop conductivity meter with 0.33% FS electronic repeatability for accurate measurement of conductivity, TDS, resistivity, and salinity with temperature compensation.
| Automation Level | semi-automated |
| Conductivity | Range |
| Electronic Unit Repeatability | 0.33%FS |
| Instrument Repeatability | 0.70%FS |
| Electronic Unit Reference Error | ±1.0%FS |
| Instrument Reference Error | ±1.5%FS |
The Benchtop Conductivity Meter is a precision analytical instrument designed for comprehensive measurement of electrical conductivity, total dissolved solids (TDS), resistivity, and salinity in aqueous solutions. This laboratory-grade meter features dual measurement modes with electronic unit repeatability of 0.33% FS and instrument repeatability of 0.70% FS, providing reliable quantitative analysis for research applications requiring accurate ionic concentration determinations.
The instrument incorporates automatic temperature compensation across a range of -5.0 to 110.0°C with manual adjustment capability, ensuring measurement accuracy across varying sample conditions. With its universal AC power supply (100-240V, 50/60Hz) and compact benchtop design, this conductivity meter integrates effectively into laboratory workflows requiring routine or high-throughput solution characterization.
How It Works
Conductivity measurement operates on the principle that dissolved ions in solution create conductive pathways for electrical current. The instrument applies an alternating voltage between electrode pairs immersed in the sample, measuring the resulting current flow. Higher concentrations of dissolved ions produce greater conductivity values, providing a quantitative assessment of total ionic content.
Temperature compensation is critical because ionic mobility increases with temperature, affecting conductivity readings. The meter automatically adjusts measurements based on sample temperature to provide standardized values at reference conditions. The instrument calculates related parameters including total dissolved solids (TDS) using empirical conversion factors, resistivity as the reciprocal of conductivity, and salinity based on established algorithms correlating conductivity to salt concentration.
Features & Benefits
Automation Level
- semi-automated
Conductivity
- Range
Electronic Unit Repeatability
- 0.33%FS
Instrument Repeatability
- 0.70%FS
Electronic Unit Reference Error
- ±1.0%FS
Instrument Reference Error
- ±1.5%FS
TDS
- Range
Resistivity
- Range
Salinity
- Range
/
- -5.0~110.0℃
Temperature Compensation Range
- -5.0~110.0℃, manual
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Industrial Hygiene
- Materials Science
- Pharmaceutical QC
Accuracy
- /
Temperature Range
- Range
Power/Voltage
- AC100~240V, 50/60Hz
Weight
- 1.5 kg
Dimensions
- L: 7.1 mm
- W: 25.0 mm
- H: 19.0 mm
Comparison Guide
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Electronic Unit Repeatability | 0.33% FS | Entry-level models often provide 1-2% FS repeatability | Higher precision enables more reliable quality control measurements and reduces measurement uncertainty in analytical protocols. |
| Temperature Compensation Range | -5.0 to 110.0°C with manual adjustment | Basic meters typically offer 0-50°C automatic compensation | Extended temperature range accommodates heated samples and low-temperature applications without external temperature adjustment. |
| Multi-Parameter Measurement | Conductivity, TDS, resistivity, and salinity | Single-parameter meters require separate instruments | Simultaneous parameter measurement increases laboratory efficiency and reduces instrument investment costs. |
| Dual Measurement Modes | Electronic unit and instrument modes with different accuracy specifications | Most meters offer single measurement mode | Flexibility to choose appropriate accuracy level based on application requirements and sample characteristics. |
| Power Supply Compatibility | Universal AC 100-240V, 50/60Hz | Some instruments require region-specific power adapters | Global power compatibility eliminates need for additional power conversion equipment in international laboratory settings. |
This conductivity meter delivers analytical-grade precision with 0.33% FS electronic repeatability and multi-parameter capability in a compact benchtop design. The extended temperature compensation range and dual measurement modes provide versatility for diverse analytical applications requiring reliable ionic concentration measurements.
Practical Tips
Perform multi-point calibration using at least two standards that bracket your expected measurement range, ensuring calibration solutions are at room temperature.
Why: Bracketing calibration improves accuracy across the measurement range and eliminates extrapolation errors.
Rinse the conductivity probe with distilled water between samples and store in appropriate storage solution when not in use.
Why: Prevents cross-contamination and maintains electrode response characteristics for consistent measurements.
Allow sufficient time for measurement stabilization, especially with temperature compensation, as thermal equilibration affects reading stability.
Why: Temperature compensation calculations require stable thermal conditions to provide accurate compensated values.
Record sample temperature along with conductivity measurements to verify temperature compensation performance and aid in troubleshooting.
Why: Temperature data helps identify measurement issues and validates the effectiveness of automatic temperature correction.
If readings drift or become unstable, check for air bubbles on the electrode surface and ensure complete probe immersion in the sample.
Why: Air bubbles and incomplete immersion create erratic electrical contact, leading to unstable conductivity measurements.
Avoid measuring samples containing strong acids or bases without verifying probe compatibility, as aggressive chemicals can damage electrode surfaces.
Why: Chemical attack on electrode materials leads to measurement errors and premature probe failure.
Use fresh calibration standards and replace solutions showing signs of contamination or evaporation to maintain calibration accuracy.
Why: Degraded standards introduce systematic errors that affect all subsequent measurements until recalibration.
Setup Guide
What’s in the Box
- Benchtop conductivity meter main unit
- Conductivity probe with cable (typical)
- AC power adapter (100-240V)
- Calibration solutions set (typical)
- Sample beakers (typical)
- User manual and quick reference guide (typical)
- Calibration certificate (typical)
Warranty
ConductScience provides a one-year manufacturer warranty covering defects in materials and workmanship, with technical support available for instrument operation and calibration guidance.
Compliance
What is the difference between electronic unit and instrument measurement modes?
Electronic unit mode provides 0.33% FS repeatability with ±1.0% FS reference error, while instrument mode offers 0.70% FS repeatability with ±1.5% FS reference error. Electronic mode typically provides higher precision for analytical applications.
How does temperature compensation affect conductivity measurements?
The meter compensates for temperature effects from -5.0 to 110.0°C with manual adjustment. Since conductivity increases approximately 2% per °C, temperature compensation is essential for accurate measurements of samples outside reference temperature.
What calibration standards are recommended for this conductivity meter?
Use certified conductivity standards spanning your measurement range. Common standards include 84 µS/cm, 1413 µS/cm, and 12.88 mS/cm solutions, though consult product datasheet for specific range requirements and recommended calibration points.
Can this meter measure high-purity water with very low conductivity?
Consult product datasheet for the lower detection limit. High-purity water measurements require specialized low-conductivity electrodes and may need different calibration approaches depending on the instrument's sensitivity range.
How often should the conductivity probe be recalibrated?
Calibration frequency depends on measurement accuracy requirements and sample types. For routine analysis, weekly calibration is typical, while critical applications may require daily verification with reference standards.
What maintenance is required for the conductivity electrode?
Regular cleaning with distilled water between samples, periodic cleaning with appropriate solvents for sample-specific contamination, and storage in conductivity storage solution to maintain electrode condition and response time.
Does the meter store calibration data and measurement results?
Consult product datasheet for data storage and connectivity features. Many modern conductivity meters include internal memory and data export capabilities, though specific features vary by model.
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