Natural Light Flaw-Detection Kits
Use colored dye to reveal cracks and surface flaws in most nonporous material. Flaws become visible under natural light and appear as a bright red color. Commonly used for weld inspecting.

For Use On | Includes | Specifications Met | Each | |
Carbide, Cast Iron, Ceramic, Stainless Steel, Steel | Four 16-oz. Aerosol Cans of Cleaner, Two 16-oz. Aerosol Cans of Developer, Two 16-oz. Aerosol Cans of Red Dye | ASTM E1417, MIL-STD-2132, MIL-STD-271, SAE AMS2644 | 000000 | 0000000 |
UV Light Flaw-Detection Kits
More sensitive than natural light kits, these kits use UV light with colored dye to detect cracks, seams, and pores on machined surfaces.

Light | ||||||||||
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For Use On | Includes | Bulb Type | Wattage | Voltage | Electrical Connection Type | Plug Type | Cord Length, ft. | Specifications Met | Each | |
Carbide, Cast Iron, Ceramic, Stainless Steel, Steel | One 16-oz Aerosol Can of Fluorescent Green Dye, One 16-oz. Can of Developer, Two 16-oz. Aerosol Cans of Cleaner, UV Light | Ultraviolet | 5W | 120V AC | Plug In | Three Prong | 9 | ASTM E1417, MIL-STD-2132, MIL-STD-271, SAE AMS2644 | 0000000 | 000000000 |
Plug-In Magnetic Particle Flaw-Detection Kits

Find faulty seams, welding defects, and other surface-level flaws in ferrous materials. These kits come with everything you need to start inspecting parts. Apply the powder to the surface you want to inspect. Then plug in the yoke and it creates a magnetic field that draws the powder to the imperfection, making it easy to spot. Built for rugged environments, the yoke has a sealed design that stands up to chemicals and other harsh conditions. It’s also half the weight of a standard yoke and fits comfortably in your hand, so there’s less fatigue if you use it for extended periods of time.
For Use On | Includes | Plug Type | Voltage | Specifications Met | Each | |
Cast Iron, Stainless Steel, Steel | One 1-lb. Bottle of Gray Powder, One 1-lb. Bottle of Red Powder | Three Prong | 120V AC | ASTM E1444, MIL-STD-2132, MIL-STD-271 | 000000 | 0000000 |
Battery-Powered Magnetic Particle Flaw-Detection Kits

Check for defects slightly beneath the surface of ferrous materials that you wouldn’t otherwise see. The yoke in these kits is powered by a battery, so it uses direct current to create a strong magnetic field that reaches just below the surface of your part. When you apply the powder, the powder will move towards any flaws, helping you identify tears, cracks, and other imperfections.
Ideal for fieldwork, these kits come with everything you need for on-the-go inspections. The yoke lasts up to eight hours on a single battery charge. Built for rugged environments, it has a sealed design that stands up to chemicals and other harsh conditions.
For Use On | Includes | Battery Voltage | Batteries Included | Battery Charger Included | Specifications Met | Each | |
Cobalt, Iron, Nickel, Stainless Steel, Steel | One 1-lb. Bottle of Gray Powder | 6V DC | Yes | Yes | ASTM E1444 | 0000000 | 000000000 |
Plug-In Yokes for Magnetic-Particle Flaw Detection

Find welding defects and other flaws in magnetic materials. These yokes create a magnetic field that draws magnetic powder (not included) to imperfections, making them easy to spot. All operate on AC power, which creates a small magnetic field ideal for detecting flaws along the surface of materials. Powered by standard electrical outlets, these yokes have a reliable and consistent power source.
6-lb. yokes are lightweight and fit comfortably in your hand to reduce fatigue over extended use. Attach an LED light to your yoke to brightly illuminate inspection areas. They’re powered by the yoke’s magnetic field, so they don’t require batteries.
Yokes with an AC/DC switch can also operate on DC power. DC power generates a deeper magnetic field than AC power to find defects underneath surfaces, such as internal tears and cracks.
Calibrate your yoke before each use with a test weight to ensure accurate test results.
Yokes | Test Weights | LED Light Attachments | Replacement Cords | |||||||||||||
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Voltage | Features | For Use On | Power Source | Cord Lg. | Ht. | Lg. | Weight, lbs. | Specifications Met | Each | Each | Each | Each | ||||
120V AC | __ | Cobalt, Iron, Nickel, Stainless Steel, Steel | Electric | 12 ft. | 7 1/2" | 12" | 6 | ASTM E1444 | 0000000 | 0000000 | 0000000 | 0000000 | 0000000 | 0000000 | 0000000 | 0000000 |
120V AC | AC/DC Switch | Cobalt, Iron, Nickel, Stainless Steel, Steel | Electric | 12 ft. | 7 1/2" | 12" | 8 | ASTM E1444 | 0000000 | 00000000 | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
Surface Passivation Test Kits

Test stainless steel to see if it needs to be passivated or was properly passivated. These tests detect the presence of iron from fabrication processes, which can limit stainless steel's inherent ability to resist corrosion. Often used in aerospace, pharmaceutical, and medical device industries, they meet ASTM, aerospace, and military passivation standards.
To perform a test, squeeze the dropper to apply the solution to the surface of a part. Keep the surface wet for six minutes before rinsing and drying it off. Do not scrub the solution off. If iron is detected, the surface will appear copper in color. If no copper coloring appears, the surface is clear of contaminants and is properly passivated. These bottles include enough solution to perform hundreds of spot tests.
This test is often used on all 200 and 300 series stainless steels and some 400 series stainless steel alloys. However, it’s not recommended to use this solution on 400 series stainless steel with less than 16% chromium. These stainless steel alloys will typically cause a false failure of the test.
Container | ||||||||
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For Use On | Test Type | No. of Tests | Type | Size, oz. | Includes | Specifications Met | Each | |
Stainless Steel | Analog | 200 | Bottle | 2 | Cloth, Copper-Sulfate Testing Solution, Cotton Swabs | ASTM A380, ASTM A967, ASTM B912, MIL-STD-753, SAE AMS2700 | 0000000 | 000000 |
Leak-Detecting Dye Kits for HVAC Systems


With bright-colored dye and a fully equipped kit, you have everything you need to spot leaks in your HVAC system. These kits come with the correct amount of dye required for your system's size. Inject the dye into your system and scan it with the UV light—the dye is fluorescent, so it’s easy to spot most leaks right away. For small leaks, let the dye circulate for 24 hours and then inspect it again. Use the dye cleaner before you fix a leak. If the repair isn’t sufficient, you’ll be able to spot more dye.
Kits with UV dye and sealant are formulated to seal hard-to-find leaks from the inside of your system. The dye and sealant formula is non-polymer and oil soluble, making it safe to stay in your system indefinitely. Reinforce seals from the outside for a permanent fix.
Kits that meet ANSI/ASHRAE adhere to standards for chemical stability.
Kits that meet SAE J2297 include dye that was originally made to detect leaks in automotive AC systems.
Dye Kits | Replacement Cartridges | |||||||
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Color | For Max. HVAC System Size, Btu/hr. | Container Size, oz. | Includes | Specifications Met | Each | Each | ||
Liquid | ||||||||
Fluorescent Blue/Green | 168,000 | 0.5 | Four 0.5 oz. UV Dye and Sealant Containers, Adapter, Carrying Case, Cleaner, Hose Assembly, Injector, UV Light, UV Protective Glasses | ANSI/ASHRAE Standard 86, ANSI/ASHRAE Standard 97 | 0000000 | 0000000 | 0000000 | 000000 |
Fluorescent Yellow | 760,000 | 8 | One 8 oz. UV Dye Container, Adapter, Carrying Case, Cleaner, Hose Assembly, Injector, UV Light, UV Protective Glasses | SAE J2297 | 0000000 | 000000 | 0000000 | 00000 |