What Is Liquid Penetrant Inspection?
Liquid Penetrant Inspection (LPI) is a widely used non-destructive testing technique designed to reveal surface-breaking defects in both ferrous and non-ferrous materials. It is particularly effective for detecting fine cracks, porosity, laps, and other surface flaws that might not be visible to the naked eye.
The process involves applying a highly visible or fluorescent dye to the surface of the component. After allowing time for penetration, the excess dye is removed, and a developer is applied to draw out any trapped penetrant from defects, making them clearly visible for inspection.
LPI is suitable for materials such as metals, plastics, and ceramics, and is an essential quality assurance method across industries like manufacturing, oil and gas, and power generation
Why Choose Our Liquid Penetrant Inspection Services
At International Testing Services, we combine technical expertise with a refined inspection process to ensure the highest level of accuracy and repeatability. Our experienced technicians use premium penetrant systems and follow strict procedural standards to deliver precise, reliable results every time.
As one of the UK’s leading independent NDT providers, International Testing Services offers on-site LPI testing, supported by Level 3 oversight to ensure compliance with industry regulations. Our commitment to integrity and efficiency makes us the trusted choice for clients who demand consistent quality and safety assurance.
Benefits of Liquid Penetrant Inspection
Highly Sensitive Detection - Identifies even the smallest surface flaws and cracks.
Applicable to a Range of Materials - Works effectively on metals, plastics, and ceramics.
Non-Destructive - Preserves the integrity of the tested components.
Fast and Cost-Effective - Simple process that delivers clear, visual results quickly.
Versatile Testing Method - Ideal for complex geometries and large-scale production environments.
Ensures Quality and Compliance - Supports rigorous safety and reliability standards across industries.
