Hi, just to check, for the KF94, does it has good eletrostatic?
I was using Hwipure from lazada, solid electrostatic.
But when bought the neo-medical KF94, the static only on the side flap for nose/chin while the front main part, totally no static.

Can advise which KF94 having good electrostatic? Hwipure size too big for my wife. Trying to find smaller size KF94.

Thanks.


Reference :
https://www.usatoday.com/story/news/factche...les/5343537002/
- Mask like N95 can filter 0.3 microns
- Coronavirus particle is 0.1 microns
- Mask like N95 and KF94 works using mask electrostatic absorption, meaning particles are drawn to the fiber and trapped, instead of just passing through
- Summary, mask without electrostatic will be significantly useless to efficiently filter coronavirus

This post has been edited by mktan78: Sep 2 2021, 05:03 PM

By the way, Airish Plus, my sister bought it and tested, no electrostatic. So, I'm making a pass on Airish Plus KF94.
Per above mentioned, I'd tried on Neo-Medical, however, the electrostatic is not observed on main front part of the mask, just electrostatic on the two side flaps, so, I'm making a pass on Neo-Medical KF94 as well.

Any recommendation of KF94 with good electrostatic property ? Smaller size (to fit for female usage preferred).

Thanks.

Mask is only efficient with good electrostatic, otherwise, even N95 which having 0.3 micron is not efficient to trap covid particle with 0.1 micron

I didn't use electrostatic device to test the mask. Just cut paper into small bits and hold the mask above the paper bits if the mask could stick up the paper bits

One main reason why KF94 or surgical masks having expiry date is because the electrostatic will reduce, wear off over time. When this happened, the effectiveness of mask to filter virus particles will be impacted. Also, why the need to change masks when it get wet as electrostatic lost when got wet.

No need to cut the mask, the side facing outward (external facing side) should be able to stick up small bits of paper if it has electrostatic.
Electrostatic comes from the melt blown layer.