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Face mask testing: HeiQ Viroblock NPJ03 provides additional protection

(The information given on this page refers to tests that HeiQ did with fabrics that they have selected).

HeiQ Viroblock® NPJ03 is an innovative fabric technology that protects the mask from microbes and germs. HeiQ Viroblock® NPJ03 has also been proven to be effective against SARS-CoV-2 in tests conducted by the Peter Doherty Institute.


Contains a biocide based on recycled silver salt. The active ingredient is a reaction mass of titanium dioxide and silver chloride with a strong antiviral and antibacterial effect against enveloped viruses within minutes.  

For detailed information please visit the HeiQ website (


Antiviral efficacy test (ISO 18184): Nonwoven material for disposable face masks treated with

HeiQ Viroblock NPJ03 has been tested according to ISO 18184 standard.

Technical data of the washable facemask from with HeiQ Technology

  • 100% polyester

  • Available with one or two layers, layers always equipped with high-performance textile technology from HeiQ!

  • Available in universal sizes as well as individual sizes S and L - we will be happy to advise you!

  • CE certified according to test standard: EN 14683:2019

  • Washable up to 30 times at 60 °C

  • Recyclable like other textiles

  • Made in Vietnam

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