Trusta Made in Oman Surgical Masks Achieve 97% Virus Filtration Efficiency (VFE) Rating

Trusta Made in Oman Surgical Masks Achieve 97% Virus Filtration Efficiency (VFE) Rating

Oman based, Al Farsi National Enterprises (, have achieved a landmark recognition of 97% VFE (Virus Filtration Effiency) rating for Trusta Surgical Face Mask. These test results were confirmed by UK headquartered independent testing laboratory, Intertek Testing Services. In addition, the masks scored a 98% PFE (Particle Filtration Efficiency) and 99% BFE (Bacterial Filtration Efficiency) during the tests.


Issam Al Farsi, Chairman of Al Farsi National Enterprises commented “Our team is really proud of this achievement. This additional Virus Filtration Test results positions Trusta Surgical Masks among the best engineered masks for protectionand comfort available in the market. We have now 97% VFE rating, 98% PFE rating and 99% BFE rating – but it is the recognition of being a 100% Omani product is the one that is dearest to us “


Trusta Surgical Masks are available from pharmacies across Oman and can also be purchased online for home delivery through


The company started manufacturing of surgical masks during the last year in response to the pandemic and is the first and only Omani manufacturer of healthcare N95 particulate respirators and tie-on type surgical masks under the brand name TRUSTA. Apart from meeting national demand for surgical masks and N95 respirators, the company is also exporting for these critical personal protective equipment to GCC, Europe and India.


The Viral Filtration Efficiency test determines the filtration efficiency by comparing the control counts to test article effluent counts.The test is conducted using bacteriophage phiX174as the challenge organism. After the filtration media is preconditioned, a liquid suspension of bacteriophage phiX174 is aerosolized and delivered to the filtration media at a constant flow rate of 28.3 liters per minute (LPM) or 1 cubic foot per minute (CFM).


The aerosol droplets are drawn through a six-stage Andersen sampler for collection. The number of aerosol droplets contacting the filter media is determined by conducting challenge controls without filter medium in the test system. Challenge controls are maintained at 1100-3300 plaque-forming units (PFU) with a mean particle size (MPS) of 3.0 ± 0.3 µm. This allows virus filtration efficiencies to be reported.


The company which is part of a premier healthcare services group, said they are using its product know-how and customer understanding to create high quality products that protects people, comfortable to use and a brand they will be proud to wear. is a company specializing in Infection Prevention and Control products for hospitals and clinics. AFMS was founded during 2008 is headquartered in the capital city of Muscat at Al-Khuwair with logistics center and factory premises at Al Misfah Industrial Area. The company plans to continue to expand thier product offering and manufacturing capabilities to cover high quality PPE, medical equipment and healthcare consumables. aim to be the partner of choice for governments, communities and organizations work through the pandemic and other healthcare challenges.