LOGAN UDT-812A-12 12-Position Automated Dissolution Tester

Overview

The LOGAN UDT-812A-12 is a high-precision, 12-position online dissolution tester engineered for regulatory-compliant pharmaceutical development and quality control laboratories. It operates in accordance with USP , , and , as well as ASTM D7839–15 and ISO 17722-1 standards for dissolution apparatus qualification and performance verification. The system employs a dual-zone temperature control architecture—combining independent vessel-level thermal monitoring with a large-capacity (18 L), low-drift water bath—to ensure uniform thermal stability across all 12 dissolution vessels. Its mechanical design adheres to strict geometric tolerances: paddle wobble is maintained at ≤0.5 mm and basket wobble at ≤1.0 mm, meeting the mechanical calibration requirements specified in USP General Chapter . The instrument supports both paddle (USP Apparatus 2) and basket (USP Apparatus 1) configurations, and its modular frame allows rapid reconfiguration for small-volume (mini-vessel), rotating cylinder (Apparatus 3), paddle-over-disc (Apparatus 5), and flow-through cell (Apparatus 4) methods—enabling comprehensive method development under a single platform.

Key Features

• 12 independent dissolution vessels with individual Pt100 temperature sensors for real-time, vessel-specific thermal feedback and closed-loop regulation
• Dual-stage temperature control: primary water bath (ambient to 45°C, 0.1°C resolution) + secondary vessel jacketing (20–60°C range, ±0.1°C accuracy)
• Precision drive system delivering rotational speeds from 25 to 250 rpm with ±1 rpm repeatability, verified per USP mechanical calibration protocols
• Hermetic dual-lid configuration for each vessel to minimize solvent evaporation—critical for extended dissolution runs (e.g., 24–72 h profiles)
• Modular expansion interface supporting integration with automated sampling systems (e.g., LOGAN AS-812), UV/Vis spectrophotometers, HPLC autosamplers, fiber-optic probes, and dilution modules
• Optional high-resolution synchronized imaging module for real-time visualization of tablet disintegration, capsule erosion, or gel matrix dissolution kinetics

Sample Compatibility & Compliance

The UDT-812A-12 accommodates solid oral dosage forms including immediate- and extended-release tablets, hard/soft gelatin capsules, orally disintegrating tablets (ODTs), transdermal patches, buccal films, and semi-solid formulations such as gels and suspensions. Its mechanical and thermal specifications are validated against FDA Guidance for Industry on Dissolution Testing of Immediate-Release Solid Oral Dosage Forms and ICH Q5C stability considerations. All firmware and data handling routines comply with 21 CFR Part 11 requirements when operated with LOGAN’s validated software suite, supporting full audit trails, electronic signatures, and role-based access control. System qualification documentation—including Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ)—is provided to support GLP and GMP environments.

Software & Data Management

Control and data acquisition are managed via LOGAN Dissolution Suite v5.x—a Windows-based application designed for multi-user laboratory networks. The software supports method scripting with conditional logic (e.g., speed ramping, temperature hold steps, timed sampling triggers), real-time overlay of up to 12 dissolution profiles, and automatic export to CSV, PDF, and XML formats compatible with LIMS and statistical analysis platforms (e.g., JMP, Minitab). All raw sensor data—including individual vessel temperature logs, motor encoder timestamps, and lid status—are time-stamped with microsecond precision and stored with cryptographic hash integrity verification. Audit trail functionality records every user action, parameter change, and system event, satisfying ALCOA+ data integrity principles.

Applications

• Comparative dissolution profiling for generic drug bioequivalence (BE) studies per FDA and EMA guidance
• Formulation robustness assessment during preformulation and phase-appropriate development
• In vitro–in vivo correlation (IVIVC) model building using multi-timepoint sampling
• Dissolution-permeation coupling studies via integration with Franz diffusion cells or PAMPA systems
• Stability-indicating dissolution method development under stressed conditions (pH, surfactant, enzymatic media)
• Quality-by-Design (QbD) risk assessment of critical process parameters (CPPs) influencing dissolution performance

FAQ

Does the UDT-812A-12 meet USP mechanical calibration requirements?

Yes—the system undergoes factory calibration for centering, verticality, wobble, and rotational speed per USP , with certificate of conformance included.
Can vessel temperature be monitored independently during a run?

Yes—12 embedded Pt100 sensors provide continuous, non-invasive temperature logging at the vessel wall interface, with data logged at 1 Hz resolution.
Is the system compatible with third-party HPLC autosamplers?

Yes—via TTL-triggered I/O port and configurable RS-232/RS-485 serial handshake protocols; integration templates are available for Agilent, Waters, and Shimadzu systems.
What validation support is provided for GMP labs?

LOGAN supplies IQ/OQ/PQ protocols, traceable calibration certificates, and 21 CFR Part 11 compliance documentation packages upon request.
Can the same unit operate different speeds across subsets of vessels?

Yes—through optional “zone control” firmware, enabling up to four independent speed zones (e.g., 50 rpm for vessels 1–4, 100 rpm for vessels 5–8, etc.).