{"id":3119,"date":"2014-09-25T00:36:37","date_gmt":"2014-09-24T16:36:37","guid":{"rendered":"http:\/\/totobobo.com\/blog\/?p=3119"},"modified":"2016-07-01T12:46:28","modified_gmt":"2016-07-01T04:46:28","slug":"totobobo-demo-in-beijing","status":"publish","type":"post","link":"https:\/\/totobobo.com\/blog\/totobobo-demo-in-beijing\/","title":{"rendered":"Totobobo demo in Beijing and Shanghai"},"content":{"rendered":"
\"Swanport<\/a>

Swanport cafe in Soho Galaxy at Chaoyang, Beijing<\/p><\/div>\n

\"Muren<\/a>

Muren of Totobobo Tmall share a presentation about PM2.5<\/p><\/div>\n

\"Francis<\/a>

Francis shared his story about Totobobo mask, Robin from Totobobo Tmall is providing realtime translation<\/p><\/div>\n

2014-09-16 Swanport Cafe, Chaoyang District, Beijing<\/strong><\/p>\n

The demo in Beijing was a great success on a Tuesday evening, thanks to Robin and Muren from Totobobo Beijing and the helpful staff from Swan Port Cafe. The session started off with a brief introduction of PM2.5 by Muren, he explained what PM2.5 is, and how it affects our health. Francis, the designer of Totobobo mask, shared how he came up with the idea of a customizable and reusable respirator mask out of the SARS crisis in 2003. The fit-test demo started after a short tea break.<\/p>\n

What is “Fit-test”? Why it is important?<\/strong><\/p>\n

Fit-testing is a procedure to determine if a tight seal can be achieved when the user don a respirator mask. This is important because the quality of the seal affects the overall protection against PM2.5 and other airborne contamination. In fact, the NIOSH N95 standard requires a proper fit-test to be conducted before anyone starts using a respirator for the first time. During the fit-test, a particle counting instrument is used to accurately measure respirator fit by comparing the particle\u00c2\u00a0concentration in the surrounding air with the particle\u00c2\u00a0concentration inside the respirator. The ratio of these concentrations is called the Fit-factor (FF). For N95 mask, a minimum Fit-factor of 100 is required in order to pass the fit test.<\/p>\n

\"Fit<\/a>

Fit factor formular<\/p><\/div>\n

TSI Portacount is the best fit-testing machine in the world. (US Army recently purchased 65 sets of the same TSI Portacount fit-tester http:\/\/itbriefing.net\/modules.php?op=modload&name=News&file=article&sid=571559)<\/p>\n

The working principle of the PortaCount 8083 is straight forward: there are two flexible tubes coming out of the machine, one is to draw the air and measure the concentration of particles inside the mask. The second tube is open ended and is used to measure the particle concentration in the surrounding area. The PortaCount fit-tester calculates the particle concentration inside and outside of the mask and report the ratio, or the Fit-factor, in realtime. The higher the Fit-factor, the better is the protection effect of the mask. With the Portacount machine, Francis was able to demonstrate quantitatively how the quality of the seal and the filters can have a great impact on the protection effectiveness of a respirator.<\/p>\n

Preparing for the test<\/strong><\/p>\n

\"Francis<\/a>

Francis exchange ideas with the VIPs.<\/p><\/div>\n

Before the fit-test, a “Daily check” on the machine was performed to assure that the ambience air quality is suitable for the test and the machine is in proper operation condition. Amongst the audience, there were members from the China Consumer Association (\u00e4\u00b8\u00ad\u00e5\u203a\u00bd\u00e6\u00b6\u02c6\u00e8\u00b4\u00b9\u00e8\u20ac\u2026\u00e5\u008d\u008f\u00e4\u00bc\u0161), National labor supplies Quality Supervision and Inspection Center (Beijing) \u00e5\u203a\u00bd\u00e5\u00ae\u00b6\u00e5\u0160\u00b3\u00e4\u00bf\u009d\u00e7\u201d\u00a8\u00e5\u201c\u0081\u00e8\u00b4\u00a8\u00e9\u2021\u008f\u00e7\u203a\u2018\u00e7\u009d\u00a3\u00e6\u00a3\u20ac\u00e9\u00aa\u0152\u00e4\u00b8\u00ad\u00e5\u00bf\u0192\u00ef\u00bc\u02c6\u00e5\u0152\u2014\u00e4\u00ba\u00ac), Austria Embassy, TimeOut Beijing<\/a>, \u00c2\u00a0Aqicn.org<\/a>\u00c2\u00a0and members of the public to monitor the entire process of the fit-test demo.<\/p>\n

Fit test demo with PortaCount professional fit-tester<\/strong><\/p>\n

\"Faye<\/a>

Faye testing Totobobo mask<\/p><\/div>\n

\"The<\/a>

The perfect shape for Faye<\/p><\/div>\n

\"Fit-factor<\/a>

Fit-factor is only 3.3, the result of the cosmetic cotton pad is not convincing<\/p><\/div>\n

The first Fit-test of Totobobo mask was performed on Faye, a Chinese lady with a slender face shape. Francis first tested a pair of “fake filters” made of cosmetic cotton pad. The “fake filters” looks nearly the same as the original, but the resulting Fit-Factor is only 3.3 which means on a day with AQI 500, the cotton pad can ideally bring it down to 150, just not good enough. After changing into a pair of F96 filters, the Fit-factor shoot up to 150+. In AQI 500 day, ideally it can bring it down to 4-, better than the air you will get in Switzerland!<\/p>\n

\"The<\/a>

The Fit-factor shoot up to 150+ after changing into a pair of F96 filters<\/p><\/div>\n

The second participant was a young girl (Guo Yao) with a fuller face. Francis first conduct the test with the same Totobobo mask without modification. The water-mark-method shown that the seal was not perfect and the initial result was relatively low (below 50). However, after Reshape the mask with a hair-dryer and after a good water-mark is obtained, the Fit-factor reported by the Portacount machine come up to 200+.<\/p>\n

\"The<\/a>

The perfect shape to fit Guo Yao after ReShaping the mask<\/p><\/div>\n

\"Guo<\/a>

Guo Yao received a new Totobobo mask from Sharon, Managing Director of Totobobo mask.<\/p><\/div>\n

\"Francis<\/a>

Francis using the “Water-mark” method to predict the fitting of the mask<\/p><\/div>\n

Francis also demonstrated the effect of good and poor seal, by the “water mark method”. He applied a bit of water around the nose bridge area. When the matt color mask surface touching the wet skin, it changes to transparent (water-mark).<\/p>\n

\"Barbara<\/a>

Barbara testing Totobobo mask<\/p><\/div>\n

The third participant was Barbara Grosse from the Austria Embassy. It took Francis few rounds of ReShaping the mask in order to obtain a good water-mark seal. The final Fit-factor was also in the range of 150~200+. All three ladies passed with a clear\u00c2\u00a0margin from the minimum requirement of 100 (for N95 mask).<\/p>\n

Fit-test demo based on only three users\u00c2\u00a0is obviously not statistically sound. However, we have done this nearly a hundred times privately and this is the first time we perform the fit-test in front of a public group.<\/p>\n

After Beijing, we went to Shanghai ArtBike to conduct another fit-test demo with their customers<\/a>. We came to similar observation as in Beijing.<\/p>\n

\"Fit-test<\/a>

Fit-test at ArtBike, Shanghai<\/p><\/div>\n

 <\/p>\n

Some interesting facts we can draw from all the fit-tests:<\/strong><\/p>\n

1.\u00c2\u00a0<\/strong>Totobobo mask can be ReShaped to fit a wide range of face shapes.<\/strong><\/p>\n