IKA ROTAVISC hi-vi I Complete Rotational Viscometer

Overview

The IKA ROTAVISC hi-vi I Complete is a high-precision, benchtop rotational viscometer engineered for demanding viscosity characterization across research laboratories, quality control environments, and industrial process development. Based on the Couette principle—where torque exerted on a rotating spindle immersed in a fluid is directly proportional to its dynamic viscosity—the instrument delivers traceable, reproducible measurements under controlled shear conditions. Its extended viscosity range (200–80,000,000 mPa·s) accommodates both low-viscosity solvents and highly structured non-Newtonian materials such as polymer melts, pastes, gels, and bituminous compounds. The system operates with a continuously variable speed drive (0.01–200 rpm), enabling precise shear rate sweeps and steady-state flow curve acquisition. Integrated temperature monitoring—via PT100-compatible external probes—supports viscosity profiling across cryogenic (−100 °C) to high-temperature (300 °C) regimes, making it suitable for thermal stability assessment and Arrhenius modeling.

Key Features

• High-resolution 4.3″ TFT touchscreen interface with intuitive menu navigation and real-time graphical display of viscosity, torque, speed, and temperature
• Electronic leveling aid ensures rapid, repeatable instrument alignment—critical for minimizing measurement drift and gravitational artifacts
• RAMP function automates multi-step speed or time protocols, reducing operator dependency and improving inter-laboratory reproducibility
• Integrated timer (0.017–6000 min) supports timed measurements, dwell periods, and gelation onset detection
• Robust mechanical architecture: fixed-height stand (ROTASTAND) with 200 mm vertical travel, 16 mm support rod, and 5 kg dynamic load capacity
• Comprehensive safety design including motor overload protection, automatic shutdown on error detection, and IP40-rated enclosure for dust resistance
• Standard accessories include SP7–SP12 spindle set, protective guard frame, calibrated PT100 temperature probe, and manual lift stand

Sample Compatibility & Compliance

The ROTAVISC hi-vi I Complete accepts standard cylindrical sample containers (up to 600 mL volume) and supports a wide variety of spindle geometries—including coaxial cylinders, cone-plate, and custom spindles—for Newtonian and non-Newtonian fluid analysis. Its compliance with international standards includes adherence to DIN 53019-1 and ISO 2555 for rotational viscosity testing. When operated with validated calibration routines and documented traceability (e.g., NIST-traceable reference oils), the system meets GLP and GMP documentation requirements. Data integrity is reinforced by audit-ready timestamping, user-access logging, and electronic signature support—facilitating alignment with FDA 21 CFR Part 11 expectations where configured with compliant software environments.

Software & Data Management

While the instrument functions autonomously via embedded firmware, optional PC-based software (e.g., IKA LabWorld) enables advanced data export (CSV, XLSX), report generation, and statistical analysis (mean, SD, CV%). All measurement parameters—including speed ramp profiles, dwell times, temperature setpoints, and torque thresholds—are programmable and storable. USB and RS232 interfaces permit integration into LIMS or MES platforms. Raw torque/speed/time data streams are accessible for post-processing in MATLAB, Python, or rheological modeling suites. Internal memory retains up to 1000 measurement records with full metadata (operator ID, date/time, spindle ID, temperature reading, environmental humidity).

Applications

• Quality assurance of coatings, adhesives, inks, and resins per ASTM D1084 and ISO 2555
• Thermal viscosity profiling of lubricants, heat transfer fluids, and phase-change materials
• Gelation kinetics and thixotropic recovery studies in pharmaceutical suspensions and cosmetic emulsions
• Process consistency verification in food manufacturing (e.g., sauces, dairy products, starch dispersions)
• Characterization of drilling muds, asphalt binders, and polymer melts in petrochemical R&D
• Educational rheology labs requiring hands-on exposure to shear-dependent flow behavior

FAQ

What spindle sets are included with the ROTAVISC hi-vi I Complete?
The system ships with the SP7–SP12 standard spindle set (six spindles), a protective guard frame, a calibrated PT100 temperature probe, and the ROTASTAND manual lift stand.
Can the instrument perform temperature-controlled measurements without an external bath?
No—the ROTAVISC hi-vi I Complete does not include integrated temperature control; it requires connection to an external circulator or Peltier module via the PT100 sensor interface.
Is calibration traceable to national standards?
Yes—when used with certified reference oils (e.g., Cannon, Paratherm) and following IKA’s calibration protocol, results are traceable to SI units through accredited metrology chains.
Does the device support Good Manufacturing Practice (GMP) workflows?
It provides foundational GMP-enabling features (audit trail, user management, electronic signatures with optional software), though full validation requires site-specific IQ/OQ/PQ documentation.
What is the minimum sample volume required for accurate measurement?
Minimum volume depends on spindle geometry: SP7–SP12 spindles typically require ≥250 mL for cylindrical cup configurations to ensure valid shear field development and avoid wall effects.