#sip mask

[pandemic-info]

Mask fit factor when lifting mask to eat or drink:

This is interesting. A lot of people do the lift-to-eat method on flights, etc. I always wondered whether you'd potentially trap contaminated air. Scientists even told me that it is a risk, though minimal compared to total removal.

Here's an actual fit test video. Fit factor drops all the way down to 4.6 when the mask is lifted to drink through a straw:

As he says, that's just mildly better than a surgical mask.

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Compare to 230 with a plugged straw through Sip Valve:

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And 382 when totally sealed: "That means the air is 382 times cleaner inside the mask than outside."