Here's Sawyer's FAQ page:
Here's their contact page:
I'd shoot them an email, and tell them exactly what it is you are trying to do (important that they know you want to filter out virus) and the conditions you'll be operating in. I've found that they are quick to respond.
I've used the Sawyer Squeeze and the Sawyer Mini but I haven't used the .02 so I don't want to give you bad information.