Fungilab V•Compact Advanced Rotational Viscometer

Overview

The Fungilab V•Compact Advanced Rotational Viscometer is an integrated, tablet-controlled rheological measurement system engineered for precision viscosity characterization across industrial, pharmaceutical, and academic laboratories. Operating on the principle of rotational viscometry—where torque required to rotate a spindle at a defined angular velocity within a sample is quantified—the V•Compact delivers high reproducibility in Newtonian and non-Newtonian fluid assessment. Its architecture conforms to ISO 2555, ASTM D2196, and USP guidelines for rotational viscosity testing, ensuring data integrity in regulated environments. Unlike legacy benchtop units, the V•Compact embeds its control logic and real-time data acquisition within a dedicated 8-inch Android-based tablet interface, eliminating external PC dependency while maintaining full traceability and audit readiness.

Key Features

• Integrated tablet interface with proprietary Fungilab V-Soft application—enables direct parameter configuration, real-time viscosity readout, customizable curve plotting (viscosity vs. shear rate, temperature, or time), and export-ready CSV/PDF reporting.
• Modular spindle system supporting three interchangeable head assemblies: L (Low-viscosity), R (Standard-range), and H (High-viscosity)—each calibrated independently and mechanically compatible without recalibration.
• Wide dynamic viscosity range spanning 1 to 230,000,000 cP (mPa·s), achieved through optimized spindle geometry (e.g., R-1, LCP accessory), precise motor control (0.01–250 rpm), and thermal stabilization up to 300 °C.
• High-fidelity temperature monitoring via Class A PT100 probe with ±0.3 °C accuracy and 0.1 °C resolution—supports isothermal, ramped, and hold protocols per ASTM D445 and ISO 3104.
• Robust mechanical design featuring AISI 316 stainless steel spindles and corrosion-resistant housing—validated for use with aggressive solvents, polymer melts, and high-solids suspensions.
• Compliance-ready firmware architecture supporting GLP/GMP workflows, including user access levels, electronic signatures, and 21 CFR Part 11–compatible audit trails when paired with optional network-enabled data archiving.

Sample Compatibility & Compliance

The V•Compact accommodates diverse sample matrices—including aqueous solutions, emulsions, molten thermoplastics, ceramic slurries, and biopolymer gels—through standardized geometries (spindle types L, R, H) and optional accessories such as low-viscosity adapters (LCP), thermocouple jackets, and Peltier-controlled bath interfaces. All spindle calibrations are traceable to NIST-certified reference oils, and instrument validation reports include as-found/as-left data per IQ/OQ protocols. The system meets essential requirements for ISO/IEC 17025 accredited testing labs and supports documentation alignment with FDA, EMA, and PMDA submission standards for material characterization dossiers.

Software & Data Management

V-Soft software provides a unified platform for method development, multi-step test sequencing (e.g., controlled shear rate sweeps, thixotropy recovery loops), and statistical analysis (mean, SD, CV%). Raw torque and rotational data are logged at ≥10 Hz sampling frequency and timestamped with microsecond precision. Export options include metadata-rich CSV files compatible with MATLAB, JMP, and LabArchives; PDF reports embed instrument ID, operator credentials, calibration status, and environmental logs. Optional cloud synchronization enables centralized fleet management and remote diagnostics for multi-site QA/QC operations—fully compliant with internal SOPs requiring data integrity, version control, and retention periods exceeding 15 years.

Applications

• Quality control of coatings, adhesives, and inks—verifying batch-to-batch consistency against target viscosity windows at production-relevant shear rates.
• Rheological profiling of pharmaceutical suspensions and injectables—assessing yield stress, flow curves, and temperature-dependent behavior per ICH Q5C stability protocols.
• Process development support for polymer extrusion and injection molding—measuring melt viscosity at elevated temperatures and shear rates mimicking die conditions.
• Research into colloidal stability and gelation kinetics—leveraging time-resolved measurements to quantify structural breakdown and recovery under oscillatory or steady-state conditions.
• Evaluation of food textures and dairy formulations—correlating apparent viscosity with sensory attributes using standardized spindle geometries aligned with AOAC 965.20.

FAQ

Does the V•Compact require external calibration services after initial setup?
No—each spindle assembly ships with individual calibration certificates traceable to NIST standards. Routine verification can be performed in-house using certified viscosity reference oils (e.g., Cannon-Fenske series) per ASTM D445 Annex A1.

Can the tablet interface be replaced or upgraded independently?
Yes—the tablet is field-replaceable and supports Android OS updates up to API level 33. Firmware updates for V-Soft are delivered quarterly via secure HTTPS channel and maintain backward compatibility with legacy method libraries.

Is it possible to integrate the V•Compact into a LIMS or MES environment?
Yes—through optional OPC UA or RESTful API modules, enabling bidirectional communication with laboratory information management systems and enterprise manufacturing execution platforms without compromising audit trail integrity.

What safety certifications does the instrument carry?
The V•Compact complies with IEC 61010-1 (2010), UL 61010-1, and CE marking for electromagnetic compatibility (EN 61326-1) and low-voltage directive (2014/35/EU), with full documentation available upon request.