PortalWater-Washable
Excess penetrant removed directly with water, suited to high-throughput field inspection.
Surface Method
Liquid Penetrant Testing (PT)
Detection of surface-breaking discontinuities in non-porous materials by capillary penetration.
ASTM E165ASME V Art. 6SNQC
The Process
How It Works
Liquid Penetrant testing (PT) identifies surface-breaking discontinuities (cracks, pores and lack of fusion) in non-porous metallic and non-metallic materials. A low-viscosity penetrant is applied to the surface, seeps into any discontinuities by capillary action and, after excess removal, a developer draws the indication out for visual interpretation.
In the Field
Photo Record
Applicable Techniques
Types and Variants
Solvent-Removable
Removal with a solvent-dampened cloth, ideal for localised or restricted-access inspection.
Visible (Color Contrast)
Interpreted under white light, with no need for a dark booth or UV lamp.
Fluorescent
Higher detection sensitivity, interpreted under ultraviolet (black) light in a darkened area.
When to Use
Where We Apply It
- Welds in stainless steel and non-ferrous alloys
- Cast and forged components
- Inspection of non-magnetic materials
- Final fabrication verification
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