The Group seeks to maintain its competitive advantage through technical differentiation and product quality. The Group seeks to identify specific opportunities where it has commercial, reputational or technological advantage.
Aerospace
Specialism
The Group is a leading specialist in the design and manufacture of filtration components and assemblies for the aerospace industry. Our components are designed specifically for particular airframes and are specified on most of the world’s commercial airframes.
Niche positions
The Group provides a wide range of aerospace filters but has strong niche positions in:
- Fuel tank inserting.
- Coolant systems for aircraft control systems.
- Fuel line and hydraulic filters.

Energy & Industrial
Specialism
The Group provides filtration solutions for energy and industrial process applications. Our filters are to be found in many of the harshest industrial environments.
Niche positions
The Group has niche expertise in:
- Hot gas and gasification filtration.
- Pulse jet filtration systems.
- Nuclear containment filtration.
- Ballast water filtration.
- FCC slurry oil filtration.
- Microelectronics manufacturing filtration.

Laboratory
Specialism
The Group designs and manufactures a range of equipment for use in laboratories. Seal Analytical is a global leader in the manufacture of laboratory based instruments and robotics for clean water analysis. Porvair Sciences produces a broad range of microplates, filters, tubing and associated consumables used in diagnostics, sample preparation and chromatography applications.
Niche positions
The Group has niche expertise in:
- Clean water analysis.
- Laboratory robotics.
- Sample preparation, filtration, and separation.
- The filtration of genetic material.
- Chromatography consumables.

Metal Melt Quality
Specialism
The Group’s Metal Melt Quality division specialises in the design and manufacture of ceramic filters for molten metal. The Group provides patent protected filters for: the aluminium cast house industry: the filtration of gray and ductile iron; and the filtration of super alloys used in the manufacture of turbine blades.
Niche positions
The global market for cast house aluminium filters, particularly high magnesium alloys.
- The North American market for gray and ductile iron filters, mainly used in the manufacture of engine blocks and gearbox housings.
- Bespoke 3D printed ceramic filters used in the global market for aerospace and IGT exotic alloy turbine blades.
