How effective are your masks?

During the COVID-19 Pandemic, a frequent public concern is the efficacy of one's masks to properly remove hazardous ambient particulate matters. aggregates DIY filter-test hardware and testing data of masks to help people get real performance of
their masks.

The website can be used to find the filtration efficiency of a specific brand of mask. Because professional testing labs
require much budget and time, we would like to show DIY testing results with acceptable accuracy.

Can our data be trusted?

We have verified that, although our data is not 1 to 1, it is in the same ballpark. If you want to see how we obtained the data, go to the Procedure section.

Fast and easy.

Follow the simple instructions at Procedure.

You can contribute.

If you have any other accurate way of researching data regarding the safety masks, you can submit that through the Data Input Section.

Contact Information

Data, Procedure, Setup:
     Enze Tian - Tsinghua University & MIT
     Minjune Kim - Lexington High School
     Thomas Li - Weston Middle School