ATAGO VISCO B(L) Portable Rotational Viscometer

Overview

The ATAGO VISCO B(L) is a compact, portable rotational viscometer engineered for precision viscosity measurement of both Newtonian and non-Newtonian fluids across industrial R&D, QC/QA, and on-site process environments. It operates on the principle of Couette flow rheometry: a motor-driven spindle (rotor) rotates at a defined speed within the sample, and the resulting viscous drag torque is measured to calculate dynamic viscosity in mPa·s. Its robust architecture supports continuous operation under ambient conditions (15–30 °C), with integrated Peltier-assisted temperature control enabling accurate thermal regulation from 0.0 to 100.0 °C—critical for evaluating thermally sensitive adhesives such as gelatin-based “jelly glue” used in premium packaging applications. Designed for reproducibility in high-viscosity regimes (up to 60 million mPa·s), the VISCO B(L) meets the mechanical and metrological demands of adhesive formulation validation, shelf-life stability testing, and batch release protocols in GMP-aligned facilities.

Key Features

• Portable, battery- and AC-powered design for lab, production floor, or field deployment
• Full stainless-steel housing for chemical resistance and long-term durability in humid or solvent-rich environments
• Intuitive one-button operation with backlit LCD display showing real-time viscosity (mPa·s), % torque, rotor ID, and temperature
• Modular rotor system: interchangeable spindles (e.g., LV, RV, HA, HB types) optimized for low-, medium-, and high-viscosity ranges
• Minimal sample requirement of just 15 mL—compatible with disposable paper cups to eliminate cross-contamination and reduce cleaning downtime
• USB interface for direct data export to PC; compatible with CSV-compatible spreadsheet and LIMS software for audit-ready recordkeeping
• Integrated temperature sensor with ±0.2 °C accuracy and 0.1 °C resolution—traceable to NIST-certified references

Sample Compatibility & Compliance

The VISCO B(L) is validated for use with aqueous polymer dispersions, protein-based adhesives (e.g., gelatin, casein), starch pastes, latex emulsions, and synthetic resin solutions—common in packaging, bookbinding, and pharmaceutical excipient manufacturing. Its measurement protocol aligns with ISO 2555 (plastics—resins in liquid form—determination of apparent viscosity), ASTM D1084 (adhesives—viscosity by rotational method), and USP (rheological properties of semisolid dosage forms). When operated under documented SOPs—including calibration verification using certified silicone oil standards—the instrument supports GLP and GMP compliance. Temperature-controlled measurements satisfy FDA 21 CFR Part 11 requirements when paired with electronic audit trail software.

Software & Data Management

While the VISCO B(L) operates standalone, its USB output enables seamless integration into laboratory data ecosystems. Exported datasets include timestamp, rotor code, RPM, measured torque, calculated viscosity, and recorded temperature—structured for import into Excel, LabArchives, or ELN platforms. For regulated environments, users may configure third-party data acquisition tools to enforce electronic signatures, version control, and automated backup. The device does not store historical data internally; all records reside externally—ensuring full traceability and alignment with ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) data integrity principles.

Applications

• Adhesive Manufacturing: Routine QC of jelly glue (gelatin-based), PVAc emulsions, and hot-melt formulations across drying-speed grades (low/medium/high); monitoring shear-thinning behavior during coating and laminating
• Packaging & Bookbinding: Viscosity profiling of spine glues and cover adhesives to ensure optimal open time, wet tack, and final bond strength in automated casing-in lines
• Food & Pharma: Characterization of syrups, hydrocolloid gels (pectin, carrageenan), suspensions, and ointment bases per USP monographs
• Chemical Processing: In-line viscosity screening of polymer solutions, surfactant systems, and ceramic slurries prior to extrusion or casting
• Academic Research: Teaching rheological fundamentals—including yield stress estimation via ramped RPM tests—and comparative analysis of thixotropic recovery

FAQ

What rotor configurations are supported by the VISCO B(L)?
The instrument accepts ATAGO’s full suite of standardized spindles (LV-1 to LV-4, RV-1 to RV-7, HA-1 to HA-3, HB-1), each calibrated for specific viscosity sub-ranges and shear rate profiles.
Can the VISCO B(L) perform temperature-ramped viscosity sweeps?
Yes—using manual stepwise temperature setpoints or external programmable baths, users can execute controlled thermal profiles while logging viscosity vs. temperature curves.
Is calibration traceable to national standards?
Each unit ships with a factory calibration certificate referencing NIST-traceable silicone oils; users may perform periodic verification per ISO/IEC 17025 guidelines using certified reference materials.
Does the device meet IP rating requirements for workshop use?
It carries no formal IP rating; however, its sealed stainless-steel chassis and absence of ventilation grilles provide inherent resistance to dust and incidental splashes—suitable for controlled industrial settings.
How is compliance with 21 CFR Part 11 ensured?
The instrument itself is not Part 11–certified, but its raw data output—when captured via validated third-party software with audit trail, role-based access, and electronic signature capability—fulfills regulatory documentation requirements.