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Colin Krusor (ckrusor) - BPL Premium Member

My Locale Northwest US
About Me Colin Krusor has not added a biography yet.
CityPortland
StateOregon
CountryUS

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All Forum Posts by Colin Krusor

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Boat
The weight is impressive, and the design looks very tidy. Can you post more photos, Ke Wu? I'd love to have a better understanding of the bladders, valves, and envelope. What materials are all ...

In Make Your Own Gear » My air boat,less than 360g!
October 19, 8:22pm

Addendum
Thanks for adding that information, Roger. Your article and the addendum are together one of the most thorough technology reviews I've seen on BPL. And they stimulated a good discussion. The ti...

In Editor's Roundtable » RapidPure Filters Review
October 18, 11:18am

Input
Sorry to hear that, Roger. I've mentioned already my gratitude to you for putting the work into this article, and I give you credit for introducing a lot of readers (like me) to these filters a...

In Editor's Roundtable » RapidPure Filters Review
October 02, 6:02pm

Position
"This hard fact seems to be giving a lot of people much anguish, with all sorts of explanations of why it won't work." Roger, to be fair, I don't think the concerns raised so f...

In Editor's Roundtable » RapidPure Filters Review
October 01, 11:46am

Charges
"With this electrostatic filter, maybe this isn't an issue. Maybe the filter would trap the dye particles even though they're small. I think Tannin is very small also. It goes right...

In Editor's Roundtable » RapidPure Filters Review
September 27, 12:05pm

Tannin
Thanks, Roger. Karl, there are simple tests that can be done for waterborne pathogens, including viruses. For protozoan parasites like Crypto and Giardia, there are fluorescent surrogate partic...

In Editor's Roundtable » RapidPure Filters Review
September 26, 9:37pm

Capacity
I'm not fond of relying on my reckoning for determining whether the filter will remove pathogens. Organic anion concentrations vary over many orders of magnitude in environmental surface waters...

In Editor's Roundtable » RapidPure Filters Review
September 24, 5:54pm

Capacity
I disagree with your reasoning, Roger. I've spent the last four years as a graduate student doing waterborne pathogen lab and field research and I thought carefully about my question before I p...

In Editor's Roundtable » RapidPure Filters Review
September 24, 5:12pm

Capacity
I share Robert's interest in the life (capacity) of the RapidPure filters. Once particles in the source water have become electrostatically associated with the filter media, those sites on the ...

In Editor's Roundtable » RapidPure Filters Review
September 24, 4:04pm

HH calculations
Mitch, no "grains of salt" disclaimer can make hydrostatic head calculations appropriate for punctured cuben.

In GEAR » Cuben Ground = Sieve
September 21, 11:32am

All Reader Reviews by Colin Krusor

Colin Krusor has posted no reviews.