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Filter Information

Understanding Filter Efficiency

This page provides an overview of Atrix International filters and details the outstanding efficiency they deliver. Understanding filter efficiency is crucial when selecting the right vacuum system for your specific application.

What is Filter Efficiency?

Fine particulate filters are tested for their efficiency at retaining tiny particles of matter, which are measured in microns. Different filters are designed to be more efficient at retaining these particles, and the cost to manufacture the filters increases accordingly.

For example, HEPA filters are designed to retain a higher percentage of particles than a standard filter, and ULPA filters are more efficient still.

The efficiency of a filter is important depending on the application. For example, in a cleanroom environment, it is essential that as many dust particles are removed as possible to keep the atmosphere as sterile as possible. In this case, an ULPA filter would be advisable as the filter would retain more of the finer particles than a more standard filter.

Understanding Particle Sizes

Below is a chart showing the different sizes in microns of some common particles:

Particle Sizes Chart - Understanding Microns

Atrix Filter Types

Standard Filters

Efficiency: Tested down to 0.3 microns

Best for: General commercial cleaning, IT equipment maintenance, routine dust removal

Applications: Office cleaning, computer servicing, general maintenance

HEPA Filters (H13)

Efficiency: 99.995% at 0.3 microns

Best for: Healthcare, laboratories, sensitive electronics, pharmaceutical environments

Applications: Cleanrooms, medical facilities, semiconductor manufacturing

ULPA Filters (H14)

Efficiency: 99.999% at 0.12 microns

Best for: Asbestos removal, hazardous materials, highest-grade cleanrooms

Applications: Type-H asbestos vacuums, pharmaceutical cleanrooms, critical environments

Independent Testing & Certification

The Atrix International filters are independently tested for their efficiency over a range of particle sizes. Test results are available for our most popular filters:

Omega Standard Filter

Tested down to 0.3 microns

View Test Results (PDF)

Omega HEPA Filter (H13)

99.995% efficiency at 0.3 microns

View Test Results (PDF)

Omega ULPA Filter (H14)

99.999% efficiency at 0.12 microns

View Test Results (PDF)

Choosing the Right Filter

When to Use Each Filter Type:

Use Standard Filters when:

  • General dust and debris removal
  • Computer and office equipment cleaning
  • Routine maintenance applications

Use HEPA Filters when:

  • Healthcare or laboratory environments
  • Cleanroom applications (ISO Class 5-7)
  • Pharmaceutical or food processing areas
  • Capturing fine dust and allergens

Use ULPA Filters when:

  • Asbestos removal (Type-H certified vacuums)
  • Hazardous material cleanup
  • Critical cleanroom environments (ISO Class 1-4)
  • Maximum filtration efficiency is required

FREE Delivery on Filter Orders

Orders over £200 qualify for FREE UK mainland delivery. Stock up on replacement filters and save on shipping costs.

All vacuum purchases include FREE delivery regardless of order value.

Shop Replacement Filters

Browse our complete range of genuine Atrix filters. All filters are supplied with full certification and test documentation.