Ask HN: Anyone working on N95 fit test kits

There are a lot of impressive efforts coming out of the hacker and DIY space in an effort to fight COVID-19. One thing that I haven't seen yet is N95 fit test kits. While there is a lot of press coverage about the lack of masks themselves I haven't seen this critical piece of the puzzle mentioned widely. Without a fit test kit, the N95 masks are at risk of being ineffective. I know of physicians who have masks but can not source fit test fits to ensure they are using the masks properly. This is especially critical as health workers are already being forced to re-use the masks.

Here's 3m user guide to the test kit for more background:

http://multimedia.3m.com/mws/media/473960O/guide-to-using-the-3m-qualitative-fit-test-kits.pdf

If anyone knows of a resources for these kits information would be greatly appreciated throughout the healthcare community.