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Re-usable Face Mask

Original price was: R18.00.Current price is: R14.40.

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– The ISO 16604 and ASTM 1671 test methods are designed to measure the penetration resistance or breakthrough of a medium containing a bacteriophage.

The bacteriophage used is referred to as Phi X174 and has a virus particle size of 0.027 mm. This is considerably smaller than the Corona virus with a typical diameter of 0.120 mm.

These tests assess the resistance to penetration based on the size of the virus particle. An effective barrier has to block a virus particle sizes > 0.027 mm. Accordingly, ISO 16604 and ASTM 1671 can provide a method by which to assess and qualify the resistance to penetration of a Corona virus particle that is significantly larger in size.

Re-usable masks are non-refundable and/or returnable.


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