Labthink C690M Non-Destructive Package Leak Tester

Overview

The Labthink C690M Non-Destructive Package Leak Tester is an engineered solution for quantitative, non-invasive leak detection in sterile pharmaceutical primary packaging. It operates on two validated physical principles—vacuum decay and pressure decay—enabling precise measurement of minute leakage rates without compromising package integrity. Unlike destructive dye ingress or microbial challenge methods, the C690M delivers repeatable, quantitative data traceable to NIST-calibrated pressure transducers. Its design directly implements ASTM F2338 (“Standard Test Method for Nondestructive Detection of Leaks in Packages by Vacuum Decay”), YY/T 0681.18 (“Packaging for Sterile Medical Devices — Part 18: Leakage Testing by Vacuum Decay Method”), and USP (“Package Integrity Evaluation – Sterile Products”) requirements. The system is purpose-built for high-value, low-tolerance applications where container closure integrity (CCI) must be verified under regulatory scrutiny—particularly during method development, stability studies, and batch release testing.

Key Features

• Vacuum decay and positive pressure decay dual-mode operation—eliminates false negatives caused by transient pore occlusion or surface moisture.
• Swing-arm actuated test chamber with pneumatic-assisted sealing—ensures consistent clamping force across variable sample geometries (e.g., vials, ampoules, cartridges) while minimizing operator variability.
• Programmable target vacuum level (−100 to 0 kPa) and pressure ramp profiles—enables method optimization for diverse container types and elastomeric closures.
• Optically transparent polycarbonate test chamber—facilitates real-time visual verification of sample behavior (e.g., lid lift, stopper movement, bubble formation) during pressurization or evacuation.
• Integrated oil-free European vacuum pump (optional)—provides clean, maintenance-free operation with no risk of hydrocarbon contamination to sensitive biologics or lyophilized formulations.
• Micro-flow controlled pressure regulation system—dynamically adjusts gas flow to simulate calibrated leak orifices (2–8 µm per USP ), eliminating manual regulator tuning and enhancing inter-laboratory reproducibility.
• Embedded 12.1-inch Windows-based HMI with real-time pressure curve visualization, automatic leak rate calculation (in Pa·s or equivalent µm orifice size), and pass/fail threshold assignment.

Sample Compatibility & Compliance

The C690M accommodates standard pharmaceutical primary containers up to Ø45 mm × 80 mm, including but not limited to: glass and polymer-based vials (e.g., 2R–30R West Pharma specifications), molded and tubular glass ampoules (1–20 mL), cartridge systems (e.g., Luer-lock or integrated plunger designs), and pre-filled syringes. All test configurations support full lifecycle compliance with current Good Manufacturing Practice (cGMP) requirements. The system includes built-in audit trail functionality, electronic signature capability aligned with FDA 21 CFR Part 11 Subpart B, and configurable user access levels (administrator, analyst, reviewer). Validation documentation—including IQ/OQ/PQ protocols, uncertainty budgets, and standard operating procedures—is provided to support regulatory submissions and internal quality audits.

Software & Data Management

The proprietary C690M Control Software runs natively on the embedded Windows platform and supports GLP- and GMP-aligned data governance. Each test generates a timestamped, digitally signed record containing raw pressure vs. time data, calculated leak rate (Pa·s), derived equivalent orifice size (µm), and environmental metadata (ambient temperature, barometric pressure). Data export is supported via USB drive or Ethernet to networked LIMS or ELN systems in CSV, PDF, or XML formats. Remote firmware updates are enabled over secure HTTPS connections. The software architecture incorporates role-based access control (RBAC), session timeout, and immutable audit logs that meet ISO/IEC 17025 and Annex 11 requirements for computerized system validation.

Applications

• Container Closure Integrity Testing (CCIT) of lyophilized drug products in serum vials during stability protocol execution.
• Comparative evaluation of rubber stopper extractables and leachables impact on seal performance under accelerated aging conditions.
• Validation of sterilization cycle effects (e.g., steam, gamma, E-beam) on glass-polymer interface integrity in prefilled syringe assemblies.
• Leak rate trending across manufacturing lots to support continuous process verification (CPV) per ICH Q5 and Q9 guidelines.
• Root cause analysis of sporadic sterility failures through correlation of measured leak magnitude with microbial ingress thresholds defined in USP .

FAQ

What standards does the C690M comply with?
ASTM F2338, YY/T 0681.18, USP , ISO 11607-2, and relevant sections of EU Annex 1 and FDA Guidance for Industry on Container Closure Integrity Testing.
Can the system detect leaks smaller than 2 µm?
The validated detection limit is ≤2 µm per USP reference orifices; sub-2 µm sensitivity may be achievable under optimized conditions but requires additional method qualification per ICH Q2(R2).
Is external compressed air required?
Yes—the system requires a clean, dry, oil-free compressed air supply at ≥500 kPa (72.5 psi); an optional integrated air compressor is available as an accessory.
How is data traceability ensured?
All pressure sensors are NIST-traceable; each test record includes digital signatures, timestamps, instrument ID, operator ID, and full raw data—fully compliant with 21 CFR Part 11 §11.10 and §11.30 requirements.
Does the C690M support multi-sample throughput?
It is configured for single-sample testing per cycle; however, sequential automated testing is supported via external PLC integration or batch scripting in the control software.