HJ FX-MF-01A/02A/03A Leak Integrity Tester (Vacuum Decay & Bubble Emission Method)

Overview

The HJ FX-MF series Leak Integrity Testers are precision-engineered vacuum decay and bubble emission instruments designed for non-destructive, quantitative assessment of package seal integrity across regulated and industrial manufacturing environments. Operating on the principle of controlled vacuum application within a submerged test chamber, the system induces a differential pressure across the specimen’s sealed boundary. Two complementary detection modalities are supported: (1) visual observation of air leakage via bubble formation when the test sample is immersed in water under vacuum; and (2) deformation-based evaluation—monitoring specimen expansion during vacuum application and subsequent shape recovery upon venting—to infer structural resilience and seal continuity. This dual-mode methodology conforms to internationally recognized physical testing paradigms defined in ASTM D3078 (Standard Test Method for Determining Integrity of Seals by Vacuum Decay) and GB/T 15171 (Flexible Package Seal Integrity Testing). The instrument is not a qualitative pass/fail gauge but a reproducible, operator-independent platform calibrated to deliver traceable, repeatable results under GLP- and GMP-aligned operational conditions.

Key Features

• Triple-model architecture: FX-MF-01A (manual-assisted analog control), FX-MF-02A (fully automated microprocessor-controlled unit with bilingual LCD interface), and FX-MF-03A (advanced touchscreen model with integrated thermal printer, audit trail, and user-level access control).
• High-stability pneumatic architecture utilizing SMC (Japan) solenoid valves, regulators, and pressure transducers—ensuring long-term repeatability and eliminating drift-induced false negatives during extended hold periods.
• Dual operational modes: configurable selection between external compressed air supply (≥0.7 MPa) or integrated vacuum pump operation (optional accessory), enabling flexibility across facility infrastructure constraints.
• Precision vacuum sensing: digital pressure transducers with Class 0.5 accuracy (FX-MF-02A/03A) and 0.1 kPa resolution enable detection of minute pressure deviations indicative of micro-leaks as small as 10⁻³ mL/min under standardized test conditions.
• Intelligent automation sequence: fully programmable cycle including vacuum ramping, dwell time (user-defined up to 999 s), automatic pressure replenishment, timed venting, reverse purge (anti-contamination blow-down), and result logging—all executed without manual intervention.
• Robust mechanical design: stainless-steel-reinforced acrylic vacuum chamber with O-ring-sealed lid; standard chamber volume optimized for ISO-compliant immersion depth and surface-to-volume ratio per ASTM D3078 Annex A1.

Sample Compatibility & Compliance

The FX-MF platform accommodates a broad spectrum of primary and secondary packaging formats, including flexible pouches (laminated, foil-backed, retortable), rigid and semi-rigid containers (PET bottles, HDPE tubes, aluminum collapsible tubes), blister packs (cold-form, thermoformed), vials (glass and polymer), ampoules, syringes, diagnostic cartridges, and hermetically sealed electronic housings. All models comply with national and international regulatory frameworks governing package integrity verification: GB/T 15171–2012 (Seal Integrity of Flexible Packages), GB/T 27728–2011 (Moisture Permeation and Seal Strength), ASTM D3078–22 (Standard Test Method for Leak Detection in Flexible Packaging by Vacuum Method), and JJG 646–2006 (Verification Regulation for Digital Pressure Gauges). The FX-MF-03A further satisfies FDA 21 CFR Part 11 requirements through encrypted data storage, electronic signature capability, role-based user permissions, and immutable audit trail generation for all test events—including parameter changes, start/stop timestamps, and result annotations.

Software & Data Management

• FX-MF-02A: Embedded firmware with real-time parameter display, pre-set method recall (up to 10 methods), power-loss recovery (retains last configuration and active test stage), and USB export of CSV-formatted test logs.
• FX-MF-03A: 5-inch capacitive touchscreen running deterministic real-time OS; supports PDF report generation with embedded chamber image capture (via optional USB camera), batch ID tagging, QC flagging (Pass/Fail/Review), and direct thermal printing of compliance-ready certificates.
• All models maintain full traceability: each test record includes operator ID, sample ID, test date/time, vacuum setpoint, actual achieved vacuum, dwell duration, observed outcome (bubble count, deformation magnitude, recovery rate), and pass/fail status per selected acceptance criteria.
• Data integrity safeguards include write-protected internal memory, tamper-evident timestamping, and password-protected configuration menus—aligned with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).

Applications

Validated use cases span quality assurance laboratories and production lines in pharmaceuticals (sterile barrier validation per ISO 11607-2), medical devices (ISO 11607-1 packaging qualification), food and beverage (shelf-life stability correlation studies), consumer health (wet wipe pouch integrity, single-dose sachets), and electronics (IP67-rated enclosure verification). Specific applications include post-fill seal inspection of lyophilized vials, post-sterilization integrity screening of Tyvek®-lidded trays, leak quantification in child-resistant packaging, and accelerated aging protocol verification where seal degradation is assessed via comparative vacuum decay kinetics. The system supports method development per USP (Package Integrity Evaluation) and supports risk-based validation strategies per ICH Q5C and Annex 1 (EU GMP).

FAQ

What standards does the FX-MF series comply with?
The instrument meets GB/T 15171, GB/T 27728, ASTM D3078, and JJG 646. FX-MF-03A additionally supports 21 CFR Part 11 compliance through audit trail, electronic signatures, and secure data handling.
Can the vacuum chamber be customized for oversized samples?
Yes—four standard chamber sizes are available (Φ270×210 mm to Φ460×330 mm), and custom dimensions—including rectangular configurations—are offered upon engineering review and validation.
Is an external vacuum pump required for all models?
No. FX-MF-01A and FX-MF-02A operate using either user-supplied compressed air (≥0.7 MPa) or an optional external vacuum pump. FX-MF-03A supports both modes but does not include an integrated pump.
How is measurement traceability ensured?
Each unit ships with NIST-traceable calibration certificate for the digital pressure sensor. Annual recalibration is recommended per ISO/IEC 17025 guidelines, and calibration records are stored in the device’s secure memory.
Does the system support IQ/OQ/PQ documentation packages?
Yes—HJ provides comprehensive qualification templates (IQ/OQ protocols, PQ test scripts, URS alignment matrices) and on-site or remote validation support for regulated users.