http://totobobo.com/blog/6-filter-test/ Breakthrough innovation in respiratory protection for children and adults Mon, 26 Jul 2010 22:58:04 -0700 http://wordpress.org/?v=2.9.2 hourly 1 http://totobobo.com/blog/6-filter-test/comment-page-1/#comment-4841 Totobobo SuperCool mask gives cyclist fresh air in polluted traffic Mon, 24 May 2010 20:36:41 +0000 http://totobobo.com/blog/?p=1418#comment-4841 [...] to keep unwanted airborne particles out of the respiratory system. In a recent test, the TOTOBOBO filter outperformed the competition, including the Respro City mask (http://totobobo.com/blog/6-filter-test/). An earlier test in the Prince of Wales Hospital, Chinese [...] [...] to keep unwanted airborne particles out of the respiratory system. In a recent test, the TOTOBOBO filter outperformed the competition, including the Respro City mask (http://totobobo.com/blog/6-filter-test/). An earlier test in the Prince of Wales Hospital, Chinese [...]

]]> http://totobobo.com/blog/6-filter-test/comment-page-1/#comment-4372 info Tue, 16 Feb 2010 14:45:14 +0000 http://totobobo.com/blog/?p=1418#comment-4372 Pascal, thanks for your comment. To measure the impact of reduced air flow, we did a simple experiment by blocking 7/8 of the air inlet to reduce the air flow, and the reading of the particle count stays similar. I anticipate the counter counts the "dynamic density" of the particles. Higher speed particle means shorter exposure time and that actually reduce the reading. However, the effect is neutralized by the bigger volume of air passing through the counter. We also waited longer time if the air flow reduces, to make sure there is enough time to replace all the air inside the counter. What do you think? Pascal, thanks for your comment.
To measure the impact of reduced air flow, we did a simple experiment by blocking 7/8 of the air inlet to reduce the air flow, and the reading of the particle count stays similar. I anticipate the counter counts the “dynamic density” of the particles. Higher speed particle means shorter exposure time and that actually reduce the reading. However, the effect is neutralized by the bigger volume of air passing through the counter. We also waited longer time if the air flow reduces, to make sure there is enough time to replace all the air inside the counter.
What do you think?

]]> http://totobobo.com/blog/6-filter-test/comment-page-1/#comment-4371 Pascal Tue, 16 Feb 2010 14:05:30 +0000 http://totobobo.com/blog/?p=1418#comment-4371 The fan on the Dylos monitor isn't strong. A lot of the particle count reduction could simply be because the fan was unable to pull as much air through the detector -- you measured air flow reduction instead of filtering. The fan on the Dylos monitor isn’t strong. A lot of the particle count reduction could simply be because the fan was unable to pull as much air through the detector — you measured air flow reduction instead of filtering.

]]> http://totobobo.com/blog/6-filter-test/comment-page-1/#comment-4239 Robin Fri, 05 Feb 2010 06:17:35 +0000 http://totobobo.com/blog/?p=1418#comment-4239 Wow, this is very useful. Many companies offer pollution mask and filters, but none bold enough to do such a test. Wow, this is very useful. Many companies offer pollution mask and filters, but none bold enough to do such a test.

]]> http://totobobo.com/blog/6-filter-test/comment-page-1/#comment-4060 Neo Thu, 21 Jan 2010 06:25:24 +0000 http://totobobo.com/blog/?p=1418#comment-4060 Dude, that's a great post. Can you try some other material, such as T-shirt, tissue paper or even sponge? Dude, that’s a great post. Can you try some other material, such as T-shirt, tissue paper or even sponge?

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