When it comes to choosing a surgical face mask, one important factor to consider is its filtering ability.
BFE, or bacterial filtration efficiency, is a measure of a mask's ability to filter out bacteria from the air.
BFE is typically measured using a melt blown material, which is a critical component of a surgical face mask.
In this article, we will discuss what BFE is, how it is measured, and what level of BFE is used for a mask.
What is BFE?
BFE, or bacterial filtration efficiency, refers to the percentage of bacteria that a mask can filter out from the air.
This is an important measure of a mask's effectiveness in preventing the spread of infections.
A higher BFE percentage indicates that a mask can filter out more bacteria, providing better protection against infections.
How is BFE Measured?
BFE is measured by exposing the mask material to a specific concentration of bacteria-containing aerosols.
The aerosols are generated using a nebulizer, and the concentration of bacteria in the aerosols is measured before and after passing through the mask material.
The percentage reduction in bacterial concentration is calculated, giving the mask's BFE percentage.
What Level of BFE is Used for a Mask?
The level of BFE used for a mask can vary depending on the intended use of the mask. In general, surgical face masks should have a BFE of at least 95%, indicating that they can filter out at least 95% of bacteria.
Masks with higher BFE percentages, such as 98% or 99%, are also available and can provide even better protection against infections.
It's important to note that BFE is not the only factor to consider when choosing a mask, and other factors such as breathability and comfort should also be taken into account.
BFE, or bacterial filtration efficiency, is an important measure of a surgical face mask's ability to filter out bacteria from the air. Masks with higher BFE percentages provide better protection against infections.
When choosing a surgical face mask, it's essential to consider factors such as BFE, breathability, and comfort to ensure that you have a mask that meets your needs and provides effective protection.