Liquid Penetrant Testing & Inspection

Fast, effective surface flaw detection—performed by experienced NDT technicians at Hercules Crane and Lifting Supplies.

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Detect What the Eye Can’t See—Without Damaging Your Equipment

Liquid Penetrant Testing (PT) is a widely used non-destructive examination method for revealing even the finest surface flaws—such as cracks, porosity, and seams—on metal and non-metal parts. This process uses highly sensitive fluids to seep into surface defects that can’t be seen with the naked eye. After excess fluid is removed, any remaining penetrant seeps back out of flaws, producing a visible indication and allowing for precise, reliable detection.

Our technicians employ several penetrant types—solvent-removable, water-washable, and post-emulsifiable—to suit your materials and application. The process works efficiently on large batches of parts, as well as those with complex shapes, at a lower cost than many other NDT methods. Unlike most inspection options, liquid penetrant testing can be performed on a wide range of materials: metallic and non-metallic, magnetic and non-magnetic, and both conductive and non-conductive.

However, it’s important to note that liquid penetrant testing is not recommended for porous materials.

Stop defects before they cause costly downtime. Trust Hercules Crane and Lifting Supplies for efficient liquid penetrant inspection, performed wherever and whenever you need it.

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Detailed Non-Destructive Testing Services We Offer

Our specialty is advanced methods for inspecting equipment and materials without causing damage. Select a specific service below to learn more.

Liquid Penetrant Testing

Identifies surface-breaking defects in metals, plastics, and ceramics by applying a visible or fluorescent dye to the material.

Magnetic Particle Testing

Detects surface and near-surface cracks or discontinuities in ferromagnetic materials using magnetic fields and iron particles.

Ultrasonic Testing

Uses high-frequency sound waves to locate internal flaws, measure material thickness, and assess weld integrity.

Frequently Asked Questions

Answers to common questions about Liquid Penetrant Testing (PT) and our NDT certification services.

Liquid Penetrant Testing (PT) is a non-destructive testing method that uses low-viscosity fluids to detect surface-breaking defects in parts and materials. The penetrant seeps into fine cracks or voids, making flaws visible after excess fluid is removed and a developer is applied.

PT is extremely versatile and can be used on both metallic and non-metallic, magnetic and non-magnetic, and conductive or non-conductive materials. It is not suitable for highly porous materials, as these may absorb too much penetrant and obscure results.

PT provides fast, reliable detection of surface flaws—even on large batches or complex parts. It’s cost-effective, offers immediate visual results, and works for a wide variety of applications, minimizing costly downtime and helping you maintain quality and compliance.

Ensure Your Equipment is Safe & Compliant

Don't compromise on safety. Schedule your professional rigging inspection with Hercules Crane and Lifting Supplies today. Our experts are ready to assist you on-site or in our full-service shops.

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