Wahyong DS-1206AT Automated Sampling Dissolution System

Overview

The Wahyong DS-1206AT Automated Sampling Dissolution System is a fully integrated, offline dissolution testing platform engineered for pharmaceutical quality control and formulation development laboratories requiring regulatory-grade performance and operational reproducibility. Based on the USP Apparatus 1 (Basket), Apparatus 2 (Paddle), Apparatus 3 (Reciprocating Cylinder), Apparatus 4 (Flow-Through Cell), Apparatus 5 (Paddle-over-Disk), and Apparatus 6 (Rotating Cylinder) configurations, the DS-1206AT implements a coaxial drive architecture enabling seamless method switching without mechanical recalibration. Its core measurement principle relies on precise hydrodynamic control of dissolution media—maintaining laminar flow profiles around dosage forms under rigorously defined temperature, agitation, and sampling conditions—thereby ensuring pharmacopeial compliance and inter-laboratory comparability. Designed for routine QC release testing and biowaiver-supporting studies, the system supports both single- and dual-zone operation (6+6 independent channels), allowing parallel experiments with differing dissolution media, rotation speeds, or sampling schedules.

Key Features

• Coaxial dual-method drive system supporting Apparatus 1–6 interchangeability with ≤±0.2 mm shaft wobble tolerance, validated per USP General Chapter <711> and FDA Mechanical Calibration Guidance.
• Automated vessel centering mechanism with ≤0.3 mm positional drift after 1,000 insertion/removal cycles, minimizing inter-vessel variability in hydrodynamic boundary conditions.
• Dual-zone independent control: two groups of six vessels each, each with programmable rotation speed (25–250 rpm, accuracy ±0.3 rpm), temperature setpoint (ambient to 45.0 °C, stability ≤±0.2 °C), and sampling timing.
• Integrated auto-dosing module compatible with tablets, capsules, and granules; quick-release design enables full cleaning within 30 seconds to prevent cross-contamination.
• On-line secondary filtration with 0.45 µm membrane compatibility; optional automated filter changer ensures uninterrupted sampling and direct HPLC injection without manual re-filtration.
• Patented dual-bearing vertical shaft support system maintains long-term axial alignment and co-axiality—critical for consistent fluid dynamics across extended test durations.
• Bluetooth-enabled Wahyong 260-DS Mechanical Verification System, traceable to national metrological standards, provides real-time quantitative assessment of shaft wobble, centering offset, temperature uniformity, and rotational speed deviation.

Sample Compatibility & Compliance

The DS-1206AT accommodates standard USP-compliant 1000 mL dissolution vessels and supports modified geometries including mini-vessels (e.g., 100–250 mL) via adjustable fixture kits. All mechanical parameters—including paddle/basket concentricity, verticality, immersion depth, and vibration—are verifiable against ISO 19001, ASTM D7982, and ICH Q5C guidelines. The system meets the functional requirements of USP <711>, Ph. Eur. 2.9.3, and ChP 0931, and is preconfigured for 21 CFR Part 11 compliance through role-based access control, electronic signature enforcement, and immutable audit trails. Full IQ/OQ/PQ documentation packages are available upon request, aligned with GMP Annex 15 and WHO TRS 986 validation frameworks.

Software & Data Management

The embedded control software provides intuitive workflow-driven operation with configurable method templates, multi-level user permissions (administrator, supervisor, operator), and up to 1,000 unique account profiles. All user actions—including login/logout, parameter changes, sample triggers, and error acknowledgments—are time-stamped and cryptographically protected in an encrypted local database capable of storing ≥25,000 batch reports. Audit trail records are exportable in PDF/A or CSV format and support scheduled backups to network drives or enterprise servers via SMB/FTP protocols. Remote firmware updates are delivered over secure TLS channels, preserving configuration integrity while introducing new pharmacopeial methods or regulatory enhancements.

Applications

• Regulatory submission support for ANDA, NDA, and MA applications requiring dissolution profile comparisons (f2 similarity testing).
• Formulation robustness evaluation under variable pH, surfactant concentration, or sink condition adjustments.
• Extended-release product characterization using sequential sampling across 24–72 hour timelines.
• Biopharmaceutics Classification System (BCS)-based biowaiver studies compliant with FDA and EMA guidance.
• Stability-indicating dissolution method development coupled with HPLC/UPLC analysis.
• Process validation and equipment qualification in GMP manufacturing environments.

FAQ

Does the DS-1206AT support USP Apparatus 4 (Flow-Through Cell)?

Yes—the system’s modular drive interface and customizable vessel mounting fixtures accommodate Flow-Through Cell assemblies with controlled flow rate and temperature regulation.
Is mechanical verification data traceable to national metrology institutes?

Yes—the Wahyong 260-DS verification suite integrates third-party calibrated sensors (NIST-traceable thermistors, laser displacement transducers, optical encoders) and generates calibration certificates compliant with ISO/IEC 17025.
Can the system operate unattended overnight?

Yes—full automation includes timed sampling, media replenishment, post-run vessel rinsing, and fault-condition escalation via email/SMS alerts.
What level of 21 CFR Part 11 compliance is implemented?

The system enforces electronic signatures with identity verification, audit trail immutability, role-based permission inheritance, and system-generated electronic records meeting ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
Is remote technical support available globally?

Yes—Wahyong provides Tier-2 remote diagnostics via secure VPN, with on-site engineering support available across North America, Europe, and APAC through certified service partners.