Helium Leak Testing

Certified Leak Detection Services

Protect Your Critical Systems Before Costly Failures Occur

One of Singapore’s leading providers of helium leak testing services detect microscopic leaks in semiconductor, pharmaceutical, and gas distribution systems – ensuring compliance, preventing contamination, and eliminating downtime.

Detect leaks 1000x smaller than pressure testing alone

AWS CWI + ASNT Level II certified inspectors

24/7 emergency response across Singapore

THE PROBLEM YOU'RE SOLVING

One Undetected Leak Can Compromise Your Entire Operation

System Contamination

Microscopic leaks introduce impurities into ultra-high purity gas systems, compromising product quality and batch integrity in semiconductor and pharmaceutical manufacturing.

Unexpected Downtime

Hidden leaks cause gradual performance degradation. By the time pressure drops are noticeable, you’re facing emergency repairs and production losses.

The Solution

Unit Standardization:

Helium mass spectrometer leak testing detects leaks at < 1 x 10⁻⁹ atm cm³/sec, finding problems before they become failures.

WHAT IS HELIUM LEAK TESTING?

The Gold Standard for Ultra-Sensitive Leak Detection

Helium leak testing is the most sensitive, non-destructive method for verifying system integrity in gas distribution networks, vacuum chambers, and pressurized vessels. Using advanced mass spectrometer technology, we detect helium tracer gas at parts-per-million levels, identifying leaks that pressure testing and visual inspection cannot find.

Why Helium?

Smallest Molecule

Non-reactive with materials, safe for personnel, and won’t contaminate your systems during testing.

Inert & Safe

Non-reactive with materials, safe for personnel, and won’t contaminate your systems during testing.

Quantifiable Results

Mass spectrometer measures exact leak rates, providing documented proof of system integrity for compliance audits.

Industry Standard

Required by semiconductor fabs, pharmaceutical facilities, and gas suppliers worldwide for critical system qualification.

HOW HELIUM LEAK TESTING WORKS

Two Proven Methods for Complete Coverage

Mechlink Quality Management offers both inboard and outboard helium leak testing methods, selected based on your system design, accessibility, and testing requirements. Our certified engineers/technicians determine the optimal approach during pre-test consultation.

INBOARD HELIUM LEAK TESTING

Best For:

Weld joints and mechanical connections
Gas distribution piping systems
Pre-operational system qualification
New facility commissioning

How It Works:

System evacuated to create vacuum
Helium sprayed on exterior welds and connections
Helium enters through any leaks
Mass spectrometer detects helium infiltration
Leak rate quantified and documented

Technical Capabilities:

Detection limit: < 1 x 10⁻⁹ atm cm³/sec (inboard)
Acceptance criteria: No leaks exceeding threshold
Applications: Semiconductor fab gas lines, pharmaceutical process piping
Test duration: 2-8 hours (typical tool hook-up)

OUTBOARD HELIUM LEAK TESTING

Best For:

Pressurized vessels and chambers
Systems that cannot be evacuated
Emergency leak location identification

How It Works:

System pressurized with helium (minimum 15 PSI)
Sniffer probe scans all joints, welds, and connections
Helium escaping through leaks detected externally
Leak locations pinpointed and marked
Comprehensive report generated

Technical Capabilities:

Detection limit: < 5 x 10⁻⁶ atm cm³/sec (outboard)
Acceptance criteria: Zero detectable leakage
Applications: Gas storage vessels, process equipment and piping, sealed chambers
Test duration: 2-8 hours (depending on the size of the components or equipments/piping being tested)

Comparison Table:

Factor	Inbound Testing	Outbound Testing
System condition	Under vacuum	Pressurized
Detection method	Interior monitoring	External sniffer probe
Best application	Weld verification / mechanical joints	Weld verification / mechanical joints
Sensitivity	< 1 × 10^-9 atm cm³/sec	5 × 10^-6 atm cm³/sec
Speed	Slow / Moderate	Faster

Not Sure Which Method You Need?

Our technical team provides free consultation to determine the optimal testing approach for your system.

INDUSTRIES & APPLICATIONS

Critical Testing Across High-Compliance Industries

Specialized expertise in industries where system integrity is non-negotiable

Semiconductor Manufacturing

Why Helium Leak Testing Matters: Semiconductor fabrication requires ultra-high purity (UHP) gas delivery with zero contamination. Even parts-per-billion impurities from microscopic leaks can cause wafer defects, yield losses, and costly production downtime.

Pharmaceutical & Biotechnology

Why Helium Leak Testing Matters: Leak-free nitrogen blankets, clean utility systems, and sterile gas delivery are essential for product quality and regulatory compliance.

Gas

Why Helium Leak Testing Matters: Industrial gas distribution systems require leak-free delivery to protect downstream processes, customer equipment, and personnel safety. Helium leak testing ensures system integrity and prevents contamination or pressure loss.

Critical Applications:

Fab Construction Qualification: New facility UHP gas system certification before production startup
Process Gas Distribution: Bulk and Speciality gas delivery networks
Tool Hook-Up Lines: Individual equipment gas line verification (at least 4-hour test protocol)
Vacuum Chambers: Plasma etch, CVD, and PVD equipment integrity testing
Sub-Fab Distribution: Bulk gas delivery from tank farm to point-of-use
Maintenance & Troubleshooting: Post-repair verification, contamination investigation

Testing Standards Met:

SEMI standards for gas distribution systems
Client-specific qualification procedures

Critical Applications:

Sterile Gas Distribution: Nitrogen blankets for API production and storage vessels
Clean Utilities: Pharmaceutical water systems, compressed air networks
Process Piping: Solvent transfer lines, reactor feed systems
Isolators & Glove Boxes: Sterile transfer system verification

Testing Standards Met:

Pharmaceutical validation protocols

Critical Applications:

Process Gas Distribution: Industrial nitrogen, oxygen, argon delivery systems
Safety-Critical Systems: Emergency shutdown valves, relief systems
Post-Weld Verification: New construction and repair qualification

OUR TESTING EQUIPMENT

Industry-Leading Helium Mass Spectrometer Technology

State-of-the-art leak detection equipment from trusted manufacturers, maintained to the highest standards

AGILENT MD30 MSLD

Detection Capability: < 1 x 10⁻¹⁰ atm cm³/sec

VARIAN VSMD302

Detection Capability: < 5 x 10⁻¹⁰ atm cm³/sec

INFICON UL1000FAB

Detection Capability: < 2 x 10⁻¹⁰ atm cm³/sec

Applications: Semiconductor-grade applications
Calibration: Quarterly verification, NIST traceable
Features: Automated testing protocols, cleanroom compatible
Best For: Fab qualification, tool hook-up verification
Mobility: Compact design for fab floor deployment

Supporting Equipment & Accessories

Test Gas

100% Helium (Grade 5.0 – 99.999% purity)
Pressurized cylinders with regulators

Sniffer Probes (Outboard Testing)

Flexible probe extensions for hard-to-reach areas

Calibration & Maintenance: All equipment undergoes regular calibration using NIST-traceable permeation-type leak standards. Calibration certificates provided with every test report.

WHEN YOU NEED HELIUM LEAK TESTING

Critical Testing Scenarios for System Integrity

Don’t wait for failures – schedule helium leak testing at these key milestones

New Facility Commissioning

Qualify all gas distribution systems before production startup. Required for semiconductor fab and pharmaceutical facility certifications.

Post-Installation Verification

Confirm leak-free integrity after new piping, equipment, or tool hook-up installation. Mandatory before introducing high-purity or hazardous gases.

After System Modifications

Re-verify system integrity following repairs, valve replacements, or piping modifications. Ensure repairs didn't introduce new leak paths.

Regulatory Compliance Audits

Demonstrate documented proof of system integrity for ISO, or client audits. Meet semiconductor industry requirements.

Troubleshooting Investigations

Identify source of unexplained contamination, pressure loss, or system performance issues. Pinpoint problems other methods cannot detect.

Pre-Shipment Testing

Qualify assembled equipment, skids, or modular systems before delivery to client sites. Ensure transportable systems arrive leak-free.

Emergency Leak Location

24/7 rapid response for critical system failures. Minimize downtime with immediate leak detection and repair coordination.

FREQUENTLY ASKED QUESTIONS

Helium Leak Testing FAQs

What's the difference between inboard and outboard helium leak testing?

Inboard testing evacuates the system and sprays helium externally—best for weld verification in gas distribution piping. Outboard testing pressurizes the system with helium and uses a sniffer probe externally—best for vessels and systems that cannot be evacuated. Our team recommends the optimal method during pre-test consultation.

How long does helium leak testing take?

Is pressure testing required before helium leak testing?

Yes. Pressure testing identifies gross leaks quickly and inexpensively. Once gross leaks are repaired, helium leak testing verifies fine leak integrity. This two-stage approach is industry best practice and saves overall testing time.

Can you test systems that are already in operation?

Outboard testing can be performed on some operational systems with proper safety protocols. Inboard testing requires system shutdown and evacuation. We assess your specific situation during pre-test consultation.

What detection sensitivity can you achieve?

What industries require helium leak testing?

Semiconductor manufacturing (UHP gas systems), pharmaceutical/biotech, gas (safety-critical systems), electronics manufacturing (controlled atmospheres), and any industry using ultra-high purity gas distribution or vacuum systems.

How often should systems be tested?

Testing frequency depends on industry requirements and system criticality. Semiconductor: after installation, modifications, and annually. Pharmaceutical, Gas: per safety regulations. We provide customized testing schedule recommendations.

Do you provide documentation for regulatory audits?

Yes. Every test includes comprehensive documentation: test reports with leak rates, P&ID drawings, equipment calibration certificates, inspector certifications, and photographic evidence. All documentation is audit-ready for ISO, or client submissions.

What happens if leaks are found during testing?

We document exact leak locations, and provide recommendations for repairs. After the leaking area completes repairs, we re-test the affected areas to verify leak-free integrity. Complete documentation provided for all findings.

TECHNICAL SPECIFICATIONS

Testing Capabilities & Standards

Parameter	Specification
Detection sensitivity (Inboard)	< 1 x 10^-9 atm cc/sec
Detection sensitivity (Outboard)	5 x 10^-6 atm cc/sec
Test gas	100% Helium (Grade 5.0 – 99.999% purity)
Pressure range (Outboard)	Minimum 15 PSI, up to system rating
Calibration standard	NIST-traceable permeation-type leak standards
Acceptance criteria	1 x 10^-9 atm cc/sec (mBar l/sec)
Test duration	2–8 hours (typical), varies by system size
Report delivery	Within 24 hours of test completion
Inspector certification	AWS CWI or ASNT Level II
Equipment calibration	Annual + pre-test verification
Emergency response	24/7 availability, <3 hour mobilization (subject to availability)
Service coverage	Singapore nationwide + regional Asia

Standards & Compliance:

SEMI standards for semiconductor gas systems
Client-specific specifications\

CALL-TO-ACTION

Don't Wait for System Failures- Detect Leaks Now

Every day without leak testing is a day your critical systems are at risk.

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