particulate filter during chemical purification?

> The new UV Aquastar mUV is designed to use in this way, and in my experience works fine with narrow mouth Platys and various plastic water and drink bottles.

That worries me. The amount of water in proximity to the UV lamp sounds very small. I don't think I would risk it. (I use a pot.)

Ben,
I finally got back to that Platypus filter. Well, it's a great filter in the sense that not much will get through…unfortunately, that seems to include water.

I tried it out in my sink with clean tap water. The screen is so fine and is relatively small (~1/2" diam), that it takes pretty long for the water to pass through. I tried tapping the screen to dislodge bubbles, and speed the process, but it was still slow (too slow for me to feel like measuring it).

It would probably work fairly well with a foot or two of head pressure, but I'm thinking that I'd probably want it most when the water level is low.

Tom