Magnaflux Zyglo ZL-27A Penetrant, 10.5 oz

Magnaflux Zyglo ZL-27A is a high-sensitivity, water-washable fluorescent penetrant used for liquid penetrant inspection (LPI) of surface-breaking discontinuities. This Type 1 fluorescent penetrant is designed to produce bright, easily detectable indications under UV-A inspection lighting, helping inspectors locate fine cracks, laps, seams, porosity, and other surface discontinuities.

ZL-27A is a Method C, water-washable penetrant and is qualified to SAE AMS 2644. Its high sensitivity makes it suitable for aerospace, aircraft maintenance, manufacturing, and other nondestructive testing applications where reliable detection of small surface discontinuities is required.

Magnaflux Zyglo ZL-27A Features

• Type 1 fluorescent penetrant
• Method C water-washable penetrant
• High-sensitivity penetrant for liquid penetrant inspection
• Produces fluorescent indications under UV-A inspection lighting
• Qualified to SAE AMS 2644
• Designed for detection of surface-breaking discontinuities
• Suitable for aerospace and general industrial inspection applications
• Convenient aerosol package for localized inspection work

ZL-27A Fluorescent Penetrant for Liquid Penetrant Inspection

Liquid penetrant inspection uses a specially formulated penetrant to locate discontinuities that are open to the surface of a component. ZL-27A enters surface-breaking defects through capillary action. After the appropriate penetrant dwell time, excess penetrant is removed and a suitable developer is applied. The developer draws trapped penetrant back toward the surface, creating an indication that can be evaluated by the inspector.

As a Type 1 fluorescent penetrant, ZL-27A is inspected under suitable UV-A lighting. Fluorescent indications provide strong contrast against the inspection surface, helping trained inspectors identify and evaluate relevant indications.

Magnaflux ZL-27A Specifications

Typical Applications for Zyglo ZL-27A

Magnaflux ZL-27A can be used for nondestructive inspection of nonporous components and assemblies where surface-breaking discontinuities need to be detected. Typical applications include:

• Aircraft and aerospace components
• Machined metal components
• Castings
• Forgings
• Welds
• Engine and mechanical components
• Maintenance and overhaul inspection
• General industrial nondestructive testing

The appropriate penetrant sensitivity and inspection process should always be determined by the applicable engineering specification, maintenance procedure, or approved NDT procedure.

How ZL-27A Is Used

ZL-27A is part of a liquid penetrant inspection process rather than a standalone inspection product. The component is first cleaned to remove contaminants that could interfere with penetrant entry. ZL-27A is then applied to the inspection area and allowed to dwell for the time specified by the applicable inspection procedure.

After penetrant dwell, excess surface penetrant is removed using the prescribed water-washing process. A compatible developer, such as Magnaflux Zyglo ZP-9F, can then be applied according to the approved inspection procedure. Trapped penetrant produces fluorescent indications when the component is inspected under appropriate UV-A lighting.

For complete application instructions, penetrant dwell times, removal requirements, inspection conditions, and safety information, refer to the current manufacturer's technical data sheet, Safety Data Sheet, and the governing inspection specification.

ZL-27A and Other Liquid Penetrant Inspection Materials

For a complete penetrant inspection system, the penetrant is used together with compatible cleaner/remover and developer products. BAC carries Magnaflux products used throughout the liquid penetrant inspection process.

For example, Magnaflux ZP-9F is a solvent-based, nonaqueous developer used with fluorescent and visible penetrant inspection. Selecting compatible products and following the approved process is important when performing aerospace or other specification-controlled inspections.

Magnaflux Zyglo ZL-27A Product Details

Frequently Asked Questions About Magnaflux ZL-27A

What is Magnaflux ZL-27A?

Magnaflux Zyglo ZL-27A is a high-sensitivity, Type 1 fluorescent penetrant used for liquid penetrant inspection. It is a Method C water-washable penetrant designed to reveal surface-breaking discontinuities under UV-A lighting.

Is ZL-27A a fluorescent penetrant?

Yes. ZL-27A is a Type 1 fluorescent penetrant. After the penetrant inspection process is completed, indications are viewed under appropriate UV-A lighting.

Is Magnaflux ZL-27A water washable?

Yes. ZL-27A is a Method C water-washable penetrant. Excess penetrant is removed with the water-washing process specified by the applicable inspection procedure.

What is the sensitivity of ZL-27A?

ZL-27A is classified by Magnaflux as a high-sensitivity fluorescent penetrant. The required penetrant sensitivity should be selected according to the governing specification and inspection procedure for the component being tested.

What specification does ZL-27A meet?

ZL-27A is qualified to SAE AMS 2644. Always verify the current manufacturer's qualification status and the applicable specification revision before use on specification-controlled work.

What size is Magnaflux ZL-27A?

This BAC listing is for the 10.5 oz aerosol package of Magnaflux Zyglo ZL-27A.

What developer is used with ZL-27A?

A compatible developer should be selected according to the applicable penetrant inspection procedure. Magnaflux ZP-9F is a solvent-based developer designed for use in fluorescent and visible penetrant inspection applications.

Important: Always consult the current manufacturer's technical documentation, Safety Data Sheet, and the applicable governing specification or approved NDT procedure before using penetrant inspection materials.