{"id":52418,"date":"2022-12-29T15:02:36","date_gmt":"2022-12-29T14:02:36","guid":{"rendered":"https:\/\/pharma-trend.com\/en\/seoul-viosys-through-air-purifier-and-air-sterilizer-filters-bacterial-growth-and-leakage-occur\/"},"modified":"2022-12-29T15:02:36","modified_gmt":"2022-12-29T14:02:36","slug":"seoul-viosys-through-air-purifier-and-air-sterilizer-filters-bacterial-growth-and-leakage-occur","status":"publish","type":"post","link":"https:\/\/pharma-trend.com\/en\/seoul-viosys-through-air-purifier-and-air-sterilizer-filters-bacterial-growth-and-leakage-occur\/","title":{"rendered":"Seoul Viosys: Through Air Purifier and Air Sterilizer Filters, Bacterial Growth and Leakage Occur"},"content":{"rendered":"<div>\n<p>ANSAN, South Korea&#8211;(BUSINESS WIRE)&#8211;<a href=\"https:\/\/twitter.com\/hashtag\/AirPurifier?src=hash\" target=\"_blank\" rel=\"noopener\">#AirPurifier<\/a>&#8212;<a target=\"_blank\" href=\"https:\/\/cts.businesswire.com\/ct\/CT?id=smartlink&amp;url=http%3A%2F%2Fwww.seoulviosys.com%2Fen%2F&amp;esheet=53147844&amp;newsitemid=20221229005046&amp;lan=en-US&amp;anchor=Seoul+Viosys&amp;index=1&amp;md5=8786a6c4400559a671c6542c20f2b28d\" rel=\"nofollow noopener\" shape=\"rect\">Seoul Viosys<\/a> (\u201cSVC\u201d) (KOSDAQ: 092190), a global optical semiconductor company, conducted a test on air sterilization by air purifiers sold in the market. The test confirms that bacterial growth and its leakage occur through the filters. The Company announced filters in air purifiers and air sterilizers can cause viral infection and virus spread.\n<\/p>\n<p><a href=\"https:\/\/mms.businesswire.com\/media\/20221229005046\/en\/1673727\/5\/Figure_1_In-house_bacterial_culture_measurement_lab_left_in_Seoul_Viosys_and_result_of_residual_bacteria_counting_within_filters_right.jpg\"><img decoding=\"async\" src=\"https:\/\/mms.businesswire.com\/media\/20221229005046\/en\/1673727\/21\/Figure_1_In-house_bacterial_culture_measurement_lab_left_in_Seoul_Viosys_and_result_of_residual_bacteria_counting_within_filters_right.jpg\"><\/a><br \/><a href=\"https:\/\/mms.businesswire.com\/media\/20221229005046\/en\/666594\/5\/seoul_viosys_logo.jpg\"><img decoding=\"async\" src=\"https:\/\/mms.businesswire.com\/media\/20221229005046\/en\/666594\/21\/seoul_viosys_logo.jpg\"><\/a><\/p>\n<p>\nThe Company commissioned a research institute K, an internationally certified testing and research institute, to conduct a \u2018test on bacterial residue count\u2019 to check how many germs remain within filters. Air purifiers sold in the market were randomly selected and the filter contamination level was checked. For one gram of filter, an average of 70 CFU (colony forming unit) was confirmed, and for yeast and mold, more than 300 CFU per gram. These numbers are three times higher than the bacteria-permissible level, 100 CFU\/g, in wet tissues under the current Cosmetics Act of Korea.\n<\/p>\n<p>\nIn general, air purifier filters need to be replaced, on a regular basis, every 6 months or every year, as the capture performance of filters is compromised due to suspended particles such as captured dust. According to a thesis on the survival period of harmful bacteria in filters (<a target=\"_blank\" href=\"https:\/\/cts.businesswire.com\/ct\/CT?id=smartlink&amp;url=https%3A%2F%2Fwww.google.com%2Furl%3Fsa%3Dt%26rct%3Dj%26q%3D%26esrc%3Ds%26source%3Dweb%26cd%3D%26ved%3D2ahUKEwjPpZzY4I_8AhVhilYBHXVeA-0QFnoECAYQAQ%26url%3Dhttps%253A%252F%252Fwww.liebertpub.com%252Fdoi%252Fpdfplus%252F10.1177%252F153567601101600305%26usg%3DAOvVaw1ystY_SupaokwAm3UFNNlY&amp;esheet=53147844&amp;newsitemid=20221229005046&amp;lan=en-US&amp;anchor=Survival+of+Microorganisms+on+HEPA+Filters.+James+T.+Walker+et+al.%2C+Applied+Biosafety+Vol.+16%2C+No.+3%2C+2011&amp;index=2&amp;md5=483969c9450a97a28ed4001526549eab\" rel=\"nofollow noopener\" shape=\"rect\">Survival of Microorganisms on HEPA Filters. James T. Walker et al., <i>Applied Biosafety<\/i> Vol. 16, No. 3, 2011<\/a>), it has been confirmed that Staphylococcus epidermidis which causes vomiting, stomachache, and diarrhea can live up to five days in filters, and Bacillus atrophaeus can survive for more than 6 days up to 210 days at maximum.\n<\/p>\n<p>\nThe Bioresearch team of the Company checked bacterial residue inside filters, and then based on the outcome, the team also conducted a \u2018virus filtration test (virus passage test).\u2019 After spraying \u2018Phi X 174\u2019 virus which is similar to the Covid-19 virus in size and features at a chamber of 60 m<sup>3<\/sup>, air purifiers from Company A, B, and C were operated for 10 minutes, respectively. Then, the virus level was measured around the purifier\u2019s outlet area, and virus level was confirmed at 0.005~0.01% compared to the sprayed virus concentration in the air. One virus can multiply up to 1 million to 100 million times at maximum in 5~6 hours, and even if air purifier filter is used, 10,000 viruses, amounting to 0.01%, may not be filtered and may disperse into the air. Usually, as a small number of viruses such as 1,000 flu (influenza) viruses and 10~100 Noroviruses can cause infection, a sterilization system to prevent any micro leakage is required. It has been measured that one droplet of a Covid-19 patient contains 100-1,000 viruses at maximum.\n<\/p>\n<p>\nYoung Ju Lee, CEO of Seoul Viosys Co., Ltd. said, \u201cThrough this test, it has been confirmed that as time goes by, filters can even work as a medium of bacteria growth, and viruses that pass the filter can spread the infection. Filters alone cannot prevent bacterial infection and sterilization will be the best way for disinfection.\u201d\n<\/p>\n<p>\nWith its dedication to UV LED technology development for the last 20 years, the Company has developed a clean sterilization technology, \u2018Violeds.\u2019 As part of the activities to prevent the spread of infection through the air, in 2020, the Company has provided \u2018air sterilizers\u2019 for free in 300 SOHO business sites in Korea that combine filters with \u2018Violeds\u2019 technology, developed based on the investment of KRW one billion. According to a phone survey on its users in December 2022, 92% of respondents were found to be satisfied, and 83% said they would recommend the product to others, showing that the level of satisfaction with the product is quite high.\n<\/p>\n<p>\n<b>About Seoul Viosys<\/b>\n<\/p>\n<p>\nSeoul Viosys is a full-line solution provider for UV LED, VCSEL (Vertical Cavity Surface Emitting Laser), the next-generation light source for 3D sensor and laser, and a single-pixel RGB \u201cWICOP Pixel\u201d for displays. Established in 2002 as a subsidiary of Seoul Semiconductor, it captured No. 1 market share in the UV LED industry (LEDinside, 2018). Seoul Viosys has an extensive UV LED portfolio with all wavelengths range (200nm to 1600nm) including ultraviolet rays (UV), visible rays and infrared rays. It holds more than 4,000 patents related to UV LED technology. Violeds, its flagship UV LED technology, provides a wide range of industries with optimal solutions for strong sterilization and disinfection (UVC), skin regeneration (UVB), water\/air purification and effective cultivation for horticulture. In 2018, Seoul Viosys acquired RayCan, a leading optoelectronic specialist, to add the advanced VCSEL technology which supports smartphone facial recognition and autonomous driving, and has started its mass production. In January 2020, it introduced a disruptive \u201cWICOP Pixel\u201d that has the potential to be a game-changer in the display market. To learn more, visit <a target=\"_blank\" href=\"https:\/\/cts.businesswire.com\/ct\/CT?id=smartlink&amp;url=http%3A%2F%2Fwww.seoulviosys.com%2Fen%2F&amp;esheet=53147844&amp;newsitemid=20221229005046&amp;lan=en-US&amp;anchor=http%3A%2F%2Fwww.seoulviosys.com%2Fen%2F&amp;index=3&amp;md5=85c38db4cc9ffe5772fcd586f0efe988\" rel=\"nofollow noopener\" shape=\"rect\">http:\/\/www.seoulviosys.com\/en\/<\/a>, <a target=\"_blank\" href=\"https:\/\/cts.businesswire.com\/ct\/CT?id=smartlink&amp;url=https%3A%2F%2Fwww.youtube.com%2Fc%2Fvioledstechnology&amp;esheet=53147844&amp;newsitemid=20221229005046&amp;lan=en-US&amp;anchor=YouTube&amp;index=4&amp;md5=ca571ebf8511ef34d181db810bc4649a\" rel=\"nofollow noopener\" shape=\"rect\">YouTube<\/a>, <a target=\"_blank\" href=\"https:\/\/cts.businesswire.com\/ct\/CT?id=smartlink&amp;url=https%3A%2F%2Fwww.facebook.com%2FvioledsTechnology&amp;esheet=53147844&amp;newsitemid=20221229005046&amp;lan=en-US&amp;anchor=Facebook&amp;index=5&amp;md5=7725ab98ec610b817e4f642bd44a8d09\" rel=\"nofollow noopener\" shape=\"rect\">Facebook<\/a>.\n<\/p>\n<p> <b>Contacts<\/b> <\/p>\n<p>\n<b>Seoul Semiconductor Co., Ltd.<\/b><br \/>Jinseop Jung<br \/>\n<br \/>+82-1566-2771<br \/>\n<br \/><a target=\"_blank\" href=\"&#109;&#97;&#x69;l&#116;&#x6f;&#x3a;j&#106;&#x73;&#x38;7&#51;&#x32;&#x40;s&#101;&#x6f;&#x75;l&#115;&#x65;&#x6d;i&#99;&#x6f;n&#46;&#99;&#x6f;m\" rel=\"nofollow noopener\" shape=\"rect\">&#x6a;&#x6a;&#x73;&#x38;&#55;&#51;2&#64;s&#x65;&#x6f;&#x75;&#x6c;&#115;&#101;mic&#x6f;&#x6e;&#x2e;&#x63;&#111;&#109;<\/a>\n<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>ANSAN, South Korea&#8211;(BUSINESS WIRE)&#8211;#AirPurifier&#8212;Seoul Viosys (\u201cSVC\u201d) (KOSDAQ: 092190), a global optical semiconductor company, conducted a test on air sterilization by air purifiers sold in the market. The test confirms that bacterial growth and its leakage occur through the filters. The Company announced filters in air purifiers and air sterilizers can cause viral infection and virus &#8230; <span class=\"more\"><a class=\"more-link\" href=\"https:\/\/pharma-trend.com\/en\/seoul-viosys-through-air-purifier-and-air-sterilizer-filters-bacterial-growth-and-leakage-occur\/\">[Read more&#8230;]<\/a><\/span><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":{"0":"entry","1":"post","2":"publish","3":"author-business","4":"post-52418","6":"format-standard","7":"category-industry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Seoul Viosys: Through Air Purifier and Air Sterilizer Filters, Bacterial Growth and Leakage Occur - Pharma Trend<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pharma-trend.com\/en\/seoul-viosys-through-air-purifier-and-air-sterilizer-filters-bacterial-growth-and-leakage-occur\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Seoul Viosys: Through Air Purifier and Air Sterilizer Filters, Bacterial Growth and Leakage Occur - Pharma Trend\" \/>\n<meta property=\"og:description\" content=\"ANSAN, South Korea&#8211;(BUSINESS WIRE)&#8211;#AirPurifier&#8212;Seoul Viosys (\u201cSVC\u201d) (KOSDAQ: 092190), a global optical semiconductor company, conducted a test on air sterilization by air purifiers sold in the market. 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The test confirms that bacterial growth and its leakage occur through the filters. The Company announced filters in air purifiers and air sterilizers can cause viral infection and virus ... 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