Digital & Analog Rotational Viscometer Manufacturer in India
Rotational Viscometers for Laboratory Viscosity Testing
Bionics Scientific manufactures Digital and Analog Rotational Viscometers for measuring the viscosity of liquids, semi-solid materials and process fluids in laboratory, research and industrial applications.
Available models include multiple speed options, spindle configurations and digital or analog reading systems for routine viscosity testing in pharmaceutical, chemical, food, cosmetic, petroleum, paint and quality control laboratories.
What is a Rotational Viscometer?
A Rotational Viscometer is a laboratory instrument used to measure the viscosity of liquids, semi-solids and viscous materials by determining the resistance generated when a spindle rotates at a controlled speed. The measured torque is converted into viscosity values, helping laboratories evaluate the flow characteristics, consistency and quality of different materials.
Rotational viscometers are widely used for quality control, research and product development across pharmaceutical, food, chemical, cosmetic, petroleum, paint, polymer and biotechnology industries. Accurate viscosity measurement helps manufacturers maintain product consistency, optimize production processes and comply with industry quality standards.
How Does a Rotational Viscometer Work?
A rotational viscometer works by rotating a spindle inside the sample liquid at a selected speed. As the spindle moves through the liquid, the fluid creates resistance against rotation. This resistance is measured as torque and converted into viscosity values such as centipoise or millipascal-seconds.
In Bionics Scientific rotational viscometers, controlled RPM options, torque sensing capability and stable spindle movement help users obtain repeatable viscosity readings for low, medium and high viscosity samples. This makes the instrument suitable for quality control testing of materials such as paints, oils, creams, pastes, polymers, food products and pharmaceutical liquids.
Applications of Rotational Viscometers
Rotational Viscometers are widely used for viscosity measurement, formulation development and quality assurance across multiple industries where precise flow behavior is critical for product performance and manufacturing consistency.
- Pharmaceutical formulations and syrups
- Food and beverage products
- Paints, coatings and inks
- Petroleum oils and lubricants
- Cosmetics, creams and lotions
- Adhesives and sealants
- Chemical processing industries
- Polymer and resin testing
- Biotechnology and research laboratories
- Academic and quality control laboratories
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Key Features of Rotational Viscometers
- Available in Digital and Analog Rotational Viscometer models.
- Multiple speed options for different viscosity testing requirements.
- Spindle-based measurement for liquid and semi-solid samples.
- Digital or dial reading depending on the selected model.
- Suitable for routine laboratory and quality control applications.
- Models available for low, medium and higher viscosity ranges.
- Optional accessories available depending on model configuration.
Analog Rotational Viscometers:
Analog Rotational Viscometers use a dial reading system for viscosity measurement and are suitable for routine laboratory testing. Depending on the selected model, these instruments may include multiple speed settings, spindle options and manual controls for testing different sample types and viscosity ranges.
Digital vs Analog Rotational Viscometers
| Feature | Digital Model | Analog Model |
|---|---|---|
| Display | LCD Digital Display | Dial Reading |
| Accuracy | Digital reading with ±1.0% accuracy as per model specification | Dial reading with ±5% accuracy for Newtonian fluid |
| Ease of Operation | User Friendly | Manual Reading |
| Best For | Research & Quality Control | Routine Laboratory Testing |
| Data Reading | Digital | Manual |
Digital Rotational Viscometer:
Digital Rotational Viscometers provide electronic viscosity readings and are designed for laboratory, research and quality control applications. Depending on the model, available functions may include multiple speed settings, alarm functions, calibration options and digital display of test parameters.
These systems come with a number of accessories including sturdy stand and spindle set direct display of viscosity in centipoise or millipascal / seconds, %torque, spindle number and speed options depending on the selected model. These systems also include set of spindles for low or medium viscosity. To keep these systems safe and dust free a hard carrying case is also supplied with the systems.
Rotational Viscometer Specifications
| Models | BST-DRV20 | BST-DRV21 |
|---|---|---|
| Viscometer Type | Digital | Digital |
| Measuring Range | 1-100k | 1-2000k |
| RPM | 6,12,30,60 | 0.3,0.6,1.5,3,6,12,30,60 |
| Temperature Range | 0.0°C to + 100.0°C | |
| Accuracy | + / - 1.0% of range | |
| Repeatability | + / - 0.5% | |
| Power Supply | 110 / 220 Volts | |
| Optional | Specified thermostatic water Bath Low Viscosity adapter Standard oils Micro Printer RTD Temperature Probe Glass Beaker With Circulation |
|
| Display | LCD Display | |
| Controls | Touch keypad on front | |
| Computer Interface | Yes | |
| Micro Printer | Yes | |
| Alarm | Yes | |
| Certifications | CE and ISO | |
Rotational Viscometer Models & Supply Options
Bionics Scientific supplies Digital and Analog Rotational Viscometers for laboratory, research and quality control applications. Model selection depends on the required viscosity range, speed options, display type, accessories and testing requirements.
- Digital and Analog Rotational Viscometer models
- Multiple speed and spindle configurations
- Models for different viscosity measurement ranges
- Optional accessories depending on selected configuration
- Suitable for laboratory, research and quality control applications
- Technical and model-selection support available
Frequently Asked Questions About Rotational Viscometers
What is a rotational viscometer?
A rotational viscometer is an instrument used to measure the viscosity of liquids and semi-solid samples by measuring the resistance generated when a spindle rotates in the sample.
How does a rotational viscometer measure viscosity?
The spindle rotates at a selected speed inside the sample. The resistance created by the sample is measured as torque and converted into a viscosity value.
What is the difference between digital and analog rotational viscometers?
Digital rotational viscometers provide electronic readings on a display, while analog models use a dial reading system. The suitable type depends on the required measurement range, application and testing preference.
What viscosity ranges are available in Bionics Scientific rotational viscometers?
The available measuring range depends on the selected model. BST-DRV20 is specified for 1-100k, while BST-DRV21 is specified for 1-2000k.
What RPM options are available in digital rotational viscometers?
BST-DRV20 includes 6, 12, 30 and 60 RPM. BST-DRV21 includes 0.3, 0.6, 1.5, 3, 6, 12, 30 and 60 RPM.
What is the accuracy of the digital rotational viscometer?
BST-DRV20 and BST-DRV21 are specified with an accuracy of ±1.0% of range and repeatability of ±0.5%.
What samples can be tested with a rotational viscometer?
Rotational viscometers can be used for viscosity testing of samples such as oils, paints, coatings, creams, syrups, lubricants, adhesives, polymers and other laboratory liquids or semi-solid materials.
How do I choose the right rotational viscometer?
Select a model based on the expected viscosity range, sample type, required speed range, spindle configuration, display preference and any optional accessories needed for the application.
