GC Halo®

Dual action nanotechnology - 'trap and kill' surface coatings

GC has developed a pioneering formulation, GC Halo® that destroys pathogens by forming a ‘trap and kill’ layer on air filters. Fast-acting, safe and more than 99% effective against SARS-CoV-2 coronavirus, flu, bacteria and mould. Independent tests and certifications prove GC Halo’s capabilities as a filter coating to deliver cleaner and safer indoor air.

GC Halo is a breakthrough technology, providing superior, long-lasting protection with broad applications where health, safety, and wellbeing are paramount.

Dual action Nanotechnology

'Trap and kill' surface coatings

100% effective against Human Coronaviruses and Common Viruses

Independently proven to completely inactivate Human Coronavirus OC43 and Influenza A virus in liquid form – in less than one minute

At least 99% effective against SARS-CoV-2 on filters

Independently proven to trap and kill SARS-CoV-2 in dry filter format against SARS-CoV-2, the strain of coronavirus that causes COVID-19

Filters significantly
reduce airborne

Independent tests show a 77% reduction in airborne SARS-CoV-2 in a single pass

99.99% efficacy against mould

GC Halo® coated air filter achieved at least 99.99% fungicidal efficacy (Aspergillus brasiliensis)


Proven to destroy over 99.99% of Staphylococcus aureus and Escherichia coli


A simple and inexpensive solution without the need to retrofit, simple to install and works with existing filter maintenance program

Safety Assured

Independently tested to show no observable ink particulates in airflow tests, no toxic chemicals used or ozone generation

ISO Certified

Independently tested for antiviral activity on textiles according to ISO 18184:2019 and ISO 13629-2:2014 for anti-fungal activity on textiles

Green Technology

HVAC systems can operate at existing energy and MERV levels with no need to upgrade. Minimal energy used in manufacturing

How to use GC Halo®

GC Halo® coated filters can be installed quickly in existing HEPA filters and ventilation systems without the need for retro-fitting – making it a fast, affordable and highly effective way of making the air we breathe cleaner and safer.

GC Halo® for use in ventilation solutions:

  • As a post-filter for existing HEPA and air filters
  • Requires no retro-fitting – a versatile solution, compatible in existing air ventilation systems
  • Negates the need to install higher MERV rated filters
  • HVAC systems can operate at existing energy levels
  • No additional maintenance management – becomes a part of the existing filter
  • Minimal reduction in performance of airflow

Interested in GC Halo®

How it can work for you

GC Halo® is an ink formulation that can be applied to air filter material for use in ventilation solutions, from industrial scale HVAC systems to smaller, in-room units.

We have a range of partnership opportunities and commercial solutions to suit your business needs, including licensing the technology, manufacturing and incorporation into existing products.



Get in touch

Let's talk about creating safer and cleaner indoor environments

Please contact us if you are interested in knowing more about our GC Halo® formulation, or how to work with us.