MYR VR3000 Desktop Digital Rotational Viscometer — Brookfield-Compliant
| Origin | Spain |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | VR3000 |
| Pricing | Upon Request |
Overview
The MYR VR3000 is a precision-engineered desktop rotational viscometer designed for rigorous quality control and R&D applications across chemical, pharmaceutical, cosmetic, food, coatings, and polymer industries. It operates on the principle of Couette flow rheometry—measuring torque required to rotate a spindle (rotor) at a defined angular velocity within a stationary sample. Its calibration and measurement methodology fully comply with the Brookfield method, ensuring interoperability with legacy data sets and international viscosity standards including ISO 2555, ASTM D1084, D1286, D2196, and USP . The instrument delivers high reproducibility (±0.2% repeatability) and accuracy (±1% of full scale), making it suitable for GLP-compliant laboratories and regulated manufacturing environments where traceable, auditable viscosity data is essential.
Key Features
- Three interchangeable rotor families—L (Low-viscosity), R (Medium-viscosity), and H (High-viscosity)—each optimized for distinct shear-rate and torque regimes, enabling coverage from 3 mPa·s to 40,000,000 mPa·s (V2R configuration)
- V2-series models support 21 discrete rotational speeds (0.1–200 rpm), extending low-shear resolution for structured fluids such as gels, creams, and suspensions
- Integrated PT100 temperature sensor with ±0.1 °C accuracy and 0.1 °C resolution; compatible with external thermal control systems for isothermal testing between –15 °C and +180 °C
- Dual-directional RS232 interface supporting bidirectional communication with host PCs; enables remote instrument control, parameter programming, and real-time data streaming
- Auto-range detection and out-of-range alarm system prevents erroneous readings and ensures operator awareness during boundary-condition testing
- Backlit digital display showing simultaneous readouts of RPM, rotor ID, viscosity (mPa·s/cP or dPa·s/P), % torque, and sample temperature (°C/°F)
- Robust aluminum chassis with vibration-damped base, engineered for stability in shared lab environments without dedicated anti-vibration tables
Sample Compatibility & Compliance
The VR3000 accommodates diverse material classes—including Newtonian and non-Newtonian liquids, pastes, melts, and thermosensitive formulations—through application-specific accessories. Optional adapters include: (1) Micro-sample adapter (8–13 mL capacity) with Peltier-cooled jacket and integrated PT100 for sub-ambient to +100 °C testing; (2) Low-viscosity adapter with water-jacketed cup enabling stable measurements down to 1 cP under controlled shear; (3) Spiral motion adapter with six T-shaped rotors for yield-stress materials (e.g., creams, hydrogels) where conventional rotation induces wall slip or cavity formation. All configurations maintain compliance with ISO/IEC 17025 traceability requirements when used with UKAS-certified silicone oil calibration standards (BS 6075, ISO 2555). Factory calibration certificates are supplied with NIST-traceable uncertainty statements.
Software & Data Management
The VR3000 supports two tiers of software integration: ViscosoftBasic (standard with V1 models) provides serial data logging, tabular export to CSV/Excel, and basic statistical reporting. ViscosoftPlus (optional for V2 models) adds advanced functionality including method-driven workflows, multi-curve overlay, time-sweep and shear-rate ramp protocols, automatic yield stress calculation (Casson, Bingham, Herschel-Bulkley fits), and audit-trail-enabled operation per FDA 21 CFR Part 11 requirements. All software modules generate timestamped, user-logged reports with embedded metadata (operator ID, instrument SN, environmental conditions), facilitating compliance with GMP documentation standards.
Applications
This viscometer is routinely deployed in QC labs for batch release testing of paints, inks, dairy emulsions, chocolate masses, asphalt binders, pharmaceutical suspensions, and cosmetic gels. In R&D settings, it supports formulation optimization—e.g., evaluating thickener efficacy, assessing thermal degradation kinetics via temperature ramps, characterizing thixotropic recovery after shear cessation, and validating process scalability from lab to pilot plant. Its modular architecture allows seamless transition from routine single-point checks to full rheological profiling when paired with spiral motion or micro-volume accessories.
FAQ
Does the VR3000 meet regulatory requirements for pharmaceutical manufacturing?
Yes—it supports 21 CFR Part 11-compliant data integrity when used with ViscosoftPlus, including electronic signatures, audit trails, and secure user access controls.
Can I measure yield stress with the standard configuration?
No—yield stress determination requires either the spiral motion adapter or ViscosoftPlus software with programmed shear-ramp protocols.
What is the lowest measurable viscosity with the optional low-viscosity adapter?
The system achieves reliable measurements down to 1 cP under controlled temperature and shear conditions.
Is temperature control mandatory for accurate results?
While not mandatory, temperature stabilization is critical for materials exhibiting strong thermal viscosity dependence (e.g., polymers, waxes); the built-in PT100 enables monitoring, and external circulators enable active control.
How does the VR3000 ensure long-term measurement consistency?
Through factory calibration against UKAS-certified reference oils, annual recalibration recommendations, and mechanical design minimizing bearing wear and thermal drift over extended operation cycles.
