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Dye Penetrant Inspection (DPI) UV NDT Testing
Dye Penetrant Inspection (DPI) is also referred to as liquid penetrate inspection (LPI) or penetrant testing (PT) is a widely used NDT method. There are multiple NDT methods to locate surface flaws & defects, but DPI Inspection is by far the fastest for it's inspectors & most cost-effective.
Using UV Inspection Lights alongside fluorescent dye inspection (FPI) makes this method of inspection faster & even more reliable.
Dependant on the fluorescent dyes used, and the use of a UV365 Light - your indication will fluoresce brightly to bring attention to even the smallest surface defect, which could otherwise be missed using a non-fluorescent dye.
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Advanced NDT LTD are a UK Authorised Distributor of Labino UV Lights, & stock a wide range of Ultraviolet Lights/Lamps & Labino UV LED Blacklight Torches to suit your DPI testing needs & application with the use of fluorescent dyes for wet testing on ferromagnetic materials to detect surface cracks, defects and abnormalities.
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Dye Penetrant Inspection is a non-destructive testing method used to detect surface defects such as cracks, porosity, and other flaws in your material. This process involves applying a dye penetrant to the material, allowing it to soak into any imperfections, and then exposing the material to a UV light to make the dye penetrant visible. This allows for accurate and reliable surface inspection.
See the Labino MB with 'Athena' spray-can attachment accessory, a real game changer for DPI inspections, a UVG5 UV Head Torch for hands-free inspection for hard-to-reach or difficult inspection areas & the Labino GX Orion for Overhead Bench Inspections, IP68 rated for wash station areas for cleaning after inspection - as well as the all new Labino Cosmos - a large IP68 rated UV light specifically designed for large wash station areas.
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Ultraviolet Inspection Lights / Lamps & UV LED Blacklight Torches / Flashlights - For many NDT applications including: UV Non-Destructive Testing (NDT) such as Dye Penetrant Inspection (DPI), Liquid Penetrate Inspection (LPI), Penetrant Testing (PT), Magnetic Particle Inspection (MPI), Crack & Weld UV Inspection, UV Leak Testing, Purity Control, DNA Based Tracer Fluorescent Liquids (e.g. SmartWater™ Detection), Sanitation, Crime Scene Investigation, Forensics, Hotel Inspections, Art verification & restoration and more.
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See our full range of Labino UV Lighting for DPI, LPI, MPI & DP NDT Testing below:
Need Help Choosing a Light?
We know it can be difficult selecting the optimum UV LED Light with so many models & options available.
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See our handy guides below or feel free to contact us.
Labino MB 3.0 Series LED Lights
The Labino MB 3.0 Series - Zeus, Hermes Selene and Atlas UV LED Lights are compact, robust and IP68 Waterproof, handheld powerful UV lights are the more popular option for DPI Testing. (SEE THE ATHENA SPRAY CAN ATTACHMENT FOR USING AEROSOL FLUORESCENT FOR MPI & DYE PENETRANT INSPECTION)
They are compact and weigh less than many comparable products but are extremely robust, designed for heavy industries with difficult operating environments. Estimated LED Life time of 30,000 hours with an ingress protection marking of IP68
- ASTM E3022-2018
- Rolls-Royce RRES 90061
- Airbus AITM6-1001.
Labino BB 2.0 Series LED Lights
The Labino BB 2.0 Series are UV LED lights with a powerful and wide UV Output.
They provide large coverage and weigh less than many comparable products. They are widely used for field inspections, on an MPI bench or penetrant line.
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Available in the following models:
- Version: BB HELIOS, BB IKAROS or BB Artemis
- Power Source: All BB 2.0 models are available as Battery and Mains combined (DUO) or Mains only.
Labino UVG 2.0 Series LED Lights
The Labino UV LED Rechargeable torches & Head Lights.
- Small, light and powerful.
Designed for quick inspections and hard to reach areas and boasts up to an 8 hour battery runtime.
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The UVG 2.0 Series are now IP68 Waterproof and come with a 2 Year Warranty.
Models include: UVG2, UVG3 & UVG5-HEAD.
Models available to meet the following standards;
- ASTM E3022-2018
- Rolls-Royce RRES 90061
- Airbus AITM6-1001.
Labino UVG5 2.0 Series LED Head Torch
The Labino UVG5 2.0 UV LED headlight is a compact and adjustable light that frees your hands during inspections, especially useful during yoke inspections or mag bench inspections.​​
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The UVG 2.0 Series are now IP68 Waterproof and come with a 2 Year Warranty.​
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Models available to meet the following standards;
- ASTM E3022-2018
- Rolls-Royce RRES 90061
- Airbus AITM6-1001.
Labino GX Orion UV LED Lights
The Labino GX Orion overhead UV LED inspection lights provide incredible UV illumination.
The modular overhead UV System allows you to configure the desired covered area by mounting together multiple units using the latest in UV LED Technology.​
Available in the following models:
- GX Orion - REMOTE
- GX Orion - UV & WH
- GX Orion - UV
Labino Cosmos UV LED Light
The Labino Cosmos, an overhead UV LED Inspection Light specifically designed for dye penetrant wash stations.
The Labino Cosmos UV Light is designed to withstand the harsh conditions of a wash station & covers an area of 7x7ft from a distance of 10ft.
IP68 Rated & excellent heat management.
Vision 365 - UV365 - LED
The VISION 365 (UV365) is a robust high powered rechargeable pocket sized UV LED Inspection Blacklight torch.
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Ideal for the use in many applications including;
- NDT Inspection (MPI - Magnetic Particle Inspection & DPI Dye Penetrant)
- Crime Scene Investigation, Leak Testing, Detection of SmartWater™ & Other DNA Based Tracer Liquids, Art Verification & Restoration and many more.
Labino Nano UV375 - LED
The Labino Nano UV 375 UV LED Torch Light is designed for security applications such as analysing Documents & for the detection of DNA Based Tracer Liquids (SmartWater™).
This torch can also be used for some leak detection applications and suitable to detect LabinOil.
Labino LabinOil - Leak Detection
The Labino complete engine leak detection test kit with fluorescent dye and UV LED Torch.
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The fluorescence in the LabinOil is a reaction that is activated by irradiating with UV-light. You neither need to clean the engine before or after the engine leakage test, nor to empty the engine oil.
Labino Apollo 3.0 Light Meter
The Labino Apollo 3.0 UV & Visible Light Meter for accurate measurement of UV-A Radiation and white light emissions.
The new & improved Labino Apollo 3.0 Light Meter Measures both UV and Visible light via a wireless sensor.
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Wireless Radiometer and Photometer in one instrument & small enough to to fit in a pocket, the wireless sensor allows measurements up to 5 metres away and ensures the unit is stable with no movement from connecting cables during measurement. NIST, SP & ISO 3059-12.
Labino Standard MPXL Lights
The Labino Standard MPXL 35W UV Inspection Lights (135 Series & TrAc Series) are used for many applications including;
NDT inspections, Leak Testing, Crime Scene Investigation (Forensics) and many more.
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Available in the following models:
- Mains Models: Compact (135, H135, PH135)
- Duo (Battery & Mains) (S135, PS135)
- Battery Models: TrAc Light (H135TL, PH135TL) - TrAc Light Pro (PS135TLP)
Labino Superxenon MPXL Lights
The Labino® SuperXenon UV Inspection Lamp is available in 35W & 50W are based on MPXL technology.
The 50w version is one of the most powerful hand-held UV Lamps on the market! The 50W Xenon bulbs generate an extremely high UV intensity, providing a very clear excitation of fluorescent material. This lamp makes it possible to search very large areas.
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Available in the following models:
- 35w - Spot, Mid or Flood - Top Handle (SXH)
- 50w - Spot, Mid or Flood - Pistol Handle (SXPH)
- No Handle (SXNH)
Forensic Lighting - ALS
Forensic Alternative Light Sources / Alternate Light Sources (ALS) are invaluable for detecting substances (forensic trace) at a crime scene.
Used in detecting body fluids (semen, urine, saliva, vaginal fluids, blood, sweat etc.), bruising, hair, fibres, foot prints, fingerprints, Ninhydrine (treated fingerprints), Super glue (treated fingerprints), Fluorescent dyes, powders, stamps, markers, basic yellow 40, Cyanoacrylate, (SmartWater™) and general forensic searching.
UV Protection
UV (Ultra-Violet) Eye & Face Protection - UV Eye protection with 99% filtration up to 385nm.
We offer both the Labino UV Blocking face shield S400 for complete full eye & face protection & safety style glasses (S505 XC).
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WARNING! – USE OF UV LIGHTS CAN CAUSE HARM TO YOUR EYES AND SKIN, PROTECT YOURSELF AGAINST UV EXPOSURE.
DUV 35-W - Labino Bulb
The Labino® DUV-35W is an exceptional gas discharge UV bulb / lamp manufactured in cooperation with Philips.
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The high pressure arc bulb / lamp is characterised by superior output performance, intense UV light with a peak output of 365 nanometres, and a service life of over 2000 hours.
DPI - Dye Penetrant Inspection Principles & choosing the correct inspection UV Light for your NDT testing needs.
Dye Penetrant Inspection (DPI) is used to determine an items conformity, productivity, safety & can be used for checking for fractures & cracking of ferromagnetic materials. A widely used NDT Inspection method for initial visual inspection looking for surface-breaking defects in all non-porous materials (metals, plastics, or ceramics).
A liquid dye penetrant may be applied to all non-ferrous materials and ferrous materials, although for ferrous components magnetic-particle inspection is a preferred NDT method often used for its subsurface detection capability. DPI & LPI is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity, leaks in new products, product conformity & safety and to detect fatigue cracks on in-service components.
Dye Penetrant Inspection (DPI Testing) is used throughout the NDT industry as a quick & easy NDT inspection method in a variety of sectors including aerospace, automotive, oil & gas, structural steel, turbines & product conformity to inspect a wide range of products and equipment such as engine, suspension and braking system components, castings, forgings and welds.
One of the main advantages of dye penetrant inspection is that it can give an immediate indication of defects and abnormalities when using UV fluorescent dyes & a UV Inspection Light at 365nm wavelength with basic NDT knowledge & training, rather than more expensive inspection methods for an initial inspection. If defects are located, further Ultrasonic Testing can be used, but it's a good, low-cost initial indicator of an issue.
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Our Labino MB 3.0 with Athena Spray can attachment allows for easy use of fluorescent dyes for wet method DPI using UV light.
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We have a very wide range of UV Lights to choose from such as MPXL Bulb or LED technology, mains operated, portable battery operated, combinations of both, hand-held, bench mounted, in varying cases and intensities etc.
All offer instant or near instant start-up times, with no pre cooling etc. Can be switched off and back on instantly & all operate with no external fans making them lighter and quieter, very useful in damp or dusty environments and require less maintenance.
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They will still stay cool to the touch, especially useful in confined spaces.
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None of our lamps are affected by magnetic fields.
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The battery models are fitted with current regulators to keep intensities stable when the battery power fades.
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Contact us for any advice required on selecting the optimum UV light for your application.
Uncover Hidden Defects with Dye Penetrant Inspection
Dye penetrant inspection is a reliable and effective method for non-destructive testing. It uses a UV light with a 365nm output to detect small cracks, porosity, and other surface flaws.
A fluorescent dye penetrant is applied to the surface of the material and then allowed to settle into any flaws or imperfections as per your operating procedures.
After the penetrant is removed, a UV light can be used to visualize any flaws that were not visible to the naked eye.
This method is ideal for detecting small surface flaws and is a cost-effective way to ensure quality products.