VMA CN90 High-Performance Laboratory Disperser

Overview

The VMA CN90 High-Performance Laboratory Disperser is an engineered solution for reproducible, high-shear dispersion and homogenization of complex liquid-phase systems containing pigments, nanoparticles, polymers, ceramics, or pharmaceutical suspensions. Based on proven rotor-stator hydrodynamic shear principles, the CN90 delivers controlled energy input through a precisely balanced high-torque drive system operating at variable rotational speeds—optimized to generate intense laminar and transitional flow regimes within the working volume. Its design adheres to fundamental fluid mechanics requirements for deagglomeration and uniform particle distribution, making it suitable for R&D validation, formulation development, and small-batch pre-production trials where scalability and process consistency are critical.

Key Features

• 5.5 kW high-efficiency brushless motor with digitally regulated speed control (typically 0–6,000 rpm, dependent on tool geometry and load), enabling stable torque delivery across wide viscosity ranges (up to 50,000 mPa·s)
• Electrically actuated height-adjustable stand with precision linear guide rails and position memory function—ensuring repeatable immersion depth and consistent tip speed across batches
• Central dual-arm clamping mechanism with pneumatic-assisted locking: accommodates cylindrical vessels from Ø80 mm to Ø400 mm (standard glass, stainless steel, or jacketed reactors) while maintaining concentric alignment under dynamic load
• Integrated touchscreen HMI with real-time display of operational parameters—including rotational speed, elapsed time, motor current draw, and optional temperature input (via external probe interface)
• Modular tooling platform compatible with five interchangeable fine grinding systems (e.g., toothed disc, conical rotor-stator, multi-stage dispersing heads), each engineered for specific particle size reduction profiles and shear intensity requirements
• Robust cast-aluminum housing with IP54-rated electronics enclosure; CE-compliant per Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU

Sample Compatibility & Compliance

The CN90 supports dispersion of aqueous, solvent-based, and high-viscosity non-Newtonian media—including polymer melts, battery electrode slurries, cosmetic emulsions, and ceramic pastes. Vessel compatibility extends to standard DIN 28121 and ISO 4794 geometries. All wetted parts are constructed from corrosion-resistant stainless steel (AISI 316L) or PTFE-coated components where required. The system meets general laboratory safety standards and facilitates compliance with GLP documentation workflows when paired with optional audit-trail-enabled software modules. While not intrinsically rated for ATEX Zone 1 environments, explosion-proof variants (with certified motors and grounding provisions) are available upon request for solvent-handling applications.

Software & Data Management

The built-in controller stores up to 99 user-defined protocols with programmable ramp profiles, hold times, and endpoint triggers. Data export is supported via USB 2.0 to CSV format for integration into LIMS or statistical process control platforms. Optional VMA ProcessLink software enables remote monitoring, parameter logging at 1 Hz resolution, electronic signature capability, and 21 CFR Part 11–compliant audit trails—including operator ID, timestamp, parameter changes, and execution status. Raw data files include metadata headers describing tool type, vessel dimensions, and ambient conditions logged at session initiation.

Applications

• Development and optimization of pigment dispersions for coatings, inks, and automotive refinish systems
• Preparation of stable nanomaterial suspensions (e.g., graphene oxide, TiO₂, SiO₂) for characterization and functional testing
• Homogenization of active pharmaceutical ingredient (API) suspensions prior to lyophilization or tablet formulation
• Rheological conditioning of lithium-ion battery cathode/anode slurries to ensure uniform conductive network formation
• Dispersion of carbon black or silica fillers in elastomer masterbatches for rubber compound development
• Scale-down correlation studies supporting transfer from laboratory dispersers to industrial agitators or bead mills

FAQ

What vessel sizes are supported by the CN90’s central clamping system?
Standard operation covers cylindrical vessels with diameters from 80 mm to 400 mm and heights up to 600 mm—provided wall thickness and material rigidity meet minimum mechanical stability criteria.
Is the CN90 suitable for vacuum or pressure-assisted dispersion processes?
The base configuration operates at ambient pressure; however, custom flanged reactor adapters and vacuum-rated sealing kits are available for integration with jacketed vessels under reduced pressure (down to 10 mbar abs).
Can the CN90 be integrated into automated lab platforms?
Yes—digital I/O ports (0–10 V analog input/output, TTL trigger lines) and Modbus TCP support enable synchronization with robotic arms, dosing pumps, or environmental chambers in fully automated workflows.
Does VMA provide validation documentation for GMP environments?
Factory-issued IQ/OQ documentation packages—including calibration certificates for speed and torque sensors—are available as optional add-ons, aligned with ASTM E2500 and ISO/IEC 17025 traceability requirements.
How often does the dispersing tool require recalibration or maintenance?
No routine recalibration is needed; however, annual preventive maintenance—including bearing inspection, torque verification, and seal integrity testing—is recommended to sustain performance specifications over extended service life.