Viscometer
Precision kinematic viscometer with integrated temperature-controlled water bath, providing viscosity measurements from 0.01 mPa·s resolution with ±0.02 mPa·s precision across ambient to 70°C temperature range.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Model fit
- Configured during quote
- SKU family
- BIO-0439
- Sizing
- 61.0 x 46.5 x 37.0 cm
- Ordering
- Online checkout and quote request available
- Category
- Analytical Instruments
- Build notes
- Confirm accessories, station layout, and support needs before purchase
Viscometer BDV-5P - suitable for the viscosity and property testing of edible gelatin, medicinal gelatin, industrial gelatin, bone gelatin and other gelatin materials, as well as for the viscosity detection of agar, protein powder and other gelatin liquids. Features high-performance embedded intelligent touch screen interface, viscosity measurement at different specific weights and temperatures, interactive time correction function, and support for English and Chinese operation interfaces.
How It Works
Kinematic viscometry measures the time required for a fixed volume of fluid to flow through a calibrated capillary tube under gravitational force. The instrument determines kinematic viscosity by timing the flow of the test fluid through the precisely manufactured viscometer tube, with the measurement chamber maintaining a constant 100ml volume. The flow time is directly proportional to the kinematic viscosity, calculated using the viscometer constant and measured flow time.
Temperature control is critical for accurate viscosity measurements since fluid viscosity varies significantly with temperature. The integrated water bath maintains precise thermal conditions around the viscometer tube, ensuring consistent temperature throughout the measurement period. The system monitors both the bath temperature and measurement timing with high precision, enabling reproducible viscosity determinations across the 0-70°C operating range.
Features & Benefits
Automation Level
- semi-automated
Viscocity Display Resolution(mPa·s)
- 0.01
Precision(mPa·s)
- ±0.02
Time Range
- 0~5000s
Time Precision
- ≦0.01s
Time Display Resolution
- Millisecond
Water Bath Temp. Range
- R.T.~70℃
Water Bath Temp. Setting Resolution
- 0.1℃
Water Bath Temp. Precision
- ±0.1℃
Water Bath Temp. Display Resolution
- 0.01 ℃
Viscometer Volume
- 100ml
Viscometer Volume Error
- ±0.5 m
Longitudinal Central Moment
- 152 mm ± 0.5 mm
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Industrial Hygiene
- Materials Science
- Pharmaceutical QC
Power/Voltage
- 500W
Weight
- 16.0 kg
Dimensions
- L: 61.0 mm
- W: 46.5 mm
- H: 37.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Temperature Control Range | Ambient to 70°C with ±0.1°C precision | Entry-level models often require external water baths with limited temperature control | Eliminates external equipment requirements while providing precise thermal conditions for temperature-dependent studies |
| Viscosity Measurement Resolution | 0.01 mPa·s display resolution with ±0.02 mPa·s precision | Basic instruments typically offer 0.1 mPa·s or lower resolution | Enables detection of small viscosity changes critical for quality control and formulation development |
| Timing Precision | Millisecond display resolution with ±0.01s precision | Manual timing methods limited by human reaction time and stopwatch accuracy | Provides automated, reproducible timing for consistent results across multiple operators |
| Sample Volume | Fixed 100ml volume with ±0.5ml tolerance | Variable volume requirements can affect measurement consistency | Standardized volume ensures reproducible conditions and compliance with established protocols |
| Integration Level | Combined viscometer and water bath with unified controls | Separate components requiring manual coordination | Reduces setup complexity and potential sources of measurement error from component interfaces |
This integrated viscometer provides laboratory-grade precision with 0.01 mPa·s resolution, automated temperature control to 70°C, and millisecond timing accuracy. The unified design eliminates external equipment requirements while maintaining compliance with standard viscometry protocols.
Practical Tips
Verify temperature accuracy monthly using a certified reference thermometer at multiple temperature points across the operating range.
Why: Temperature directly affects viscosity measurements, and calibration drift can introduce systematic errors in results.
Clean the viscometer tube immediately after each measurement series using appropriate solvents to prevent sample cross-contamination.
Why: Residual sample can alter subsequent measurements and affect the capillary flow characteristics.
Allow samples to equilibrate at measurement temperature for at least 10 minutes before timing to ensure uniform thermal conditions.
Why: Temperature gradients within the sample can cause inconsistent flow rates and measurement variability.
If flow times appear inconsistent, check for air bubbles in the sample and ensure the viscometer tube is properly seated in the water bath.
Why: Air bubbles disrupt laminar flow while improper positioning affects temperature uniformity during measurement.
Perform duplicate measurements and calculate the average, rejecting results with >2% variation between replicates.
Why: Statistical evaluation of replicate measurements helps identify outliers and ensures measurement reliability.
Use appropriate personal protective equipment when handling heated samples and ensure adequate ventilation when measuring volatile solvents.
Why: Elevated temperatures increase vapor pressure and potential exposure risks during sample handling.
Setup Guide
What’s in the Box
- ConductScience Viscometer main unit
- 100ml kinematic viscometer tube
- Water bath assembly
- Temperature probe
- Power cable
- User manual and calibration certificate (typical)
- Cleaning accessories (typical)
Warranty
ConductScience provides a standard 1-year manufacturer warranty covering parts and labor, with technical support for calibration and operational guidance.
Compliance
What is the minimum viscosity that can be accurately measured?
With 0.01 mPa·s display resolution and ±0.02 mPa·s precision, the instrument can reliably measure viscosities down to approximately 0.05-0.1 mPa·s, suitable for most aqueous solutions and low-viscosity organic solvents.
How long does temperature equilibration take?
Temperature equilibration typically requires 15-20 minutes depending on the temperature differential. The 500W heating capacity enables relatively rapid heating, while the ±0.1°C precision ensures stable conditions before measurement.
What sample volume is required for measurement?
The instrument uses a fixed 100ml measurement volume with ±0.5ml tolerance. This standardized volume ensures consistent results and compatibility with established viscometry protocols.
Can the instrument measure non-Newtonian fluids?
The kinematic viscometry principle measures apparent viscosity at the shear rate determined by gravitational flow through the capillary. For non-Newtonian fluids, results represent viscosity at that specific shear condition rather than absolute viscosity.
What maintenance is required for accurate operation?
Regular cleaning of the viscometer tube with appropriate solvents, periodic temperature calibration verification, and water bath cleaning are essential. Consult product datasheet for specific maintenance schedules and procedures.
How does this compare to rotational viscometers?
Kinematic viscometry provides absolute viscosity measurements following standardized protocols, while rotational methods offer variable shear rate capabilities. This instrument is preferred for applications requiring compliance with ASTM or ISO kinematic viscosity standards.
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