What is the practical testing difference between ASTM F1671 and EN 14126 for viral barriers?
While both standards address biological hazards, they differ in scope: ASTM F1671 is a specific test method for viral penetration, whereas EN 14126 is a comprehensive performance standard for protective clothing. In practice, passing the viral penetration test within the EN 14126 framework often requires meeting criteria nearly identical to ASTM F1671.
ASTM F1671: The Viral Methodology
This is a pass/fail test that uses the Phi-X174 bacteriophage—a virus specifically chosen for its small size and similar morphology to blood-borne pathogens like HIV and Hepatitis. The material is challenged under a constant pressure of 2 psi (13.8 kPa) to ensure zero penetration at the microscopic level.
EN 14126: The Biological Umbrella
EN 14126 covers protection against various infectious agents. Its most rigorous component, ISO 16604, is the European equivalent of ASTM F1671. However, EN 14126 also mandates additional tests for mechanical strength, abrasion resistance, and resistance to penetration by contaminated liquids or aerosols (Class 1-6).
Compliance for Critical Care: Kae Hwa’s MediShield™ series is dual-certified, exceeding both ASTM F1671 and the viral barrier requirements of EN 14126. This ensure that our fabrics provide AAMI Level 4 protection and CE Type 4B/5B/6B safety for global medical use.