KN95 Mask with Filter 5pcs

LKR200.00
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Description

Filtering facepiece respirators (FFR), which are sometimes called disposable respirators, are subject to various regulatory
standards around the world. These standards specify certain required physical properties and performance characteristics
in order for respirators to claim compliance with the particular standard. During pandemic or emergency situations, health
authorities often reference these standards when making respirator recommendations, stating, for example, that certain
populations should use an “N95, FFP2, or similar” respirator.
This document is only intended to help clarify some key similarities between such references, specifically to the following
FFR performance standards:
• N95 (United States NIOSH-42CFR84)
• FFP2 (Europe EN 149-2001)
• KN95 (China GB2626-2006)
• P2 (Australia/New Zealand AS/NZA 1716:2012)
• Korea 1st class (Korea KMOEL – 2017-64)
• DS2 (Japan JMHLW-Notification 214, 2018)
• PFF2 (ABNT/NBR 13.698-2011 – Brazil)
As shown in the following summary table, respirators certified as meeting these standards can be expected to function very
similarly to one another, based on the performance requirements stated in the standards and confirmed during conformity
testing.
One notable comparison point is the flow rates specified by these standards for the inhalation and exhalation resistance tests.
Inhalation resistance testing flow rates range from 40 to 160L/min. Exhalation resistance testing flow rates range from 30 to
95 L/min. Some countries require testing to be performed at multiple flow rates, others at only the high or low end of those
ranges. Although this appears to suggest that the standards’ requirements for breathing resistance (also called “pressure drop”)
differ from each other, it’s important to understand that pressure drop across any filter will naturally be higher at higher flow
rates and lower at lower flow rates. Given typical pressure curves for respirator filters, the standards’ various pressure drop
requirements are actually quite similar. This chart shows a representative filter pressure drop curve. If one filter is tested at a
high flow rate, the pressure drop performance will be relatively high. If that same filter is tested at a low flow rate, the pressure
drop performance will be relatively low.

1 review for KN95 Mask with Filter 5pcs

  • vdharmapala

    Good Quality Product.

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