Dosage-form testing
Leak / Vacuum Tester
Checks that packs and containers are sealed, by pulling a vacuum around them and looking for dye ingress, bubbles or a rise in chamber pressure. Covers simple blister leak tests and deterministic vacuum-decay CCI testing.
- Pharmaceutical
- Medical devices
- Food packaging
- Nutraceutical
TROUBLESHOOTING
Common problems, causes and fixes
Cannot reach set vacuum
Likely causes
- • Worn lid gasket
- • Pump oil low or contaminated
- • Leaking tubing
What to do
- • Replace the gasket; grease if allowed
- • Change pump oil
- • Replace tubing
All packs fail (vacuum decay)
Likely causes
- • Chamber or seal leak
- • Wet or dirty containers
- • Wrong recipe
What to do
- • Run an empty-chamber test
- • Clean and dry samples
- • Load the validated recipe
Positive control passes
Likely causes
- • Blocked defect in the control
- • Test time too short
- • Transducer drift
What to do
- • Use a new, certified positive control
- • Check the recipe
- • Recalibrate transducers
Faint dye in pockets
Likely causes
- • Inadequate rinse
- • Borderline leak
What to do
- • Rinse properly and re-inspect
- • Treat as a fail and investigate the sealing process
In LimsPulse · Calibration Management
Keep every Leak tester in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.