LPI Equipment – Penetrant Inspection Systems

Our high-performance, integrated penetrant inspection systems provide fast, reliable manual penetrant testing.

Engineered for critical part testing in industries with high inspection tolerances, our equipment is easy to operate, built tough to withstand years of high volume use and offers outstanding repeatability.

Backed up by an extensive range of optimised materials and accessories, you can be sure of consistent test results across a variety of part sizes and industrial applications.

ZA-28 and ZA-37 Series

We offer six models in the ZA-28 and ZA-37 series, each designed for a specific testing method (see below). The order of use varies with different penetrant materials.

ZA-28W, ZA-37W

Our simplest units, they use water to wash excess penetrant from parts directly, without additional steps.

ZA-28E, ZA-37E

These units can locate extremely shallow flaws but require an extra processing step – applying an emulsifier – to make the penetrant washable.

ZA-28H, ZA-37H

These units deliver the highest sensitivity, but require an extra processing station for pre-rinsing parts.

  • Modular design
  • Thermostatically-controlled recirculating hot-air dryer
  • Dry developer storm cabinet
  • Standalone inspection booth
  • Durable welded steel frame
  • Adaptable to multiple applications
  • All units conform to the appropriate European Union Directives

For more information, see the Product Data Sheet.

ZA-28 penetrant processing inspection equipment


ZA-37 penetrant processing inspection equipment



The ZA-915 system is one of the most popular penetrant testing systems on the market. As a multi-station process for components up to 850 mm x 850 mm x 750 mm in size, it offers the flexibility of modular construction and has the added advantage of simple tank additions to meet your specific requirements.

You can use ZA-915 as a manual unit or, if you arrange it in a straight line configuration, you can use it with a linear robot for fully automatic applications. Alternatively, where space is limited, you can arrange ZA-915 in a ‘U’ or ‘L’ configuration.


  • Flexible modular construction
  • Manual or automatic applications

For more information, see the Product Data Sheet.

ZA-915 modular penetrant inspection line