{"id":9383,"date":"2026-06-25T10:14:56","date_gmt":"2026-06-25T03:14:56","guid":{"rendered":"https:\/\/airfiltech.vn\/?p=9383"},"modified":"2026-09-10T15:13:34","modified_gmt":"2026-09-10T08:13:34","slug":"iso-16890-officially-replaced-en-779-in-2018-have-vietnamese-businesses-updated-yet","status":"publish","type":"post","link":"https:\/\/airfiltech.vn\/en\/iso-16890-officially-replaced-en-779-in-2018-have-vietnamese-businesses-updated-yet\/","title":{"rendered":"ISO 16890 Officially Replaced EN 779 in 2018 \u2014 Have Vietnamese Businesses Updated Yet?"},"content":{"rendered":"<p>As of July 1, 2018, the EN 779:2012 standard officially expired and was fully replaced by ISO 16890 \u2014 a new air filter classification system for ventilation based on performance against the particle groups PM1, PM2.5, and PM10.<\/p>\n<p>However, an Air Filtech survey of more than 200 mechanical and electrical (M&amp;E) contractors in Vietnam in 2025 found that over 60% are still specifying filters using the old F-rating classes (F6, F7, F8).<\/p>\n<p><strong>Is this a problem? Yes.<\/strong><\/p>\n<p>The F-rating classification system under EN 779 measures filtration efficiency against 0.4 \u00b5m particles under dry test conditions, which does not fully reflect real-world efficiency against PM2.5 and PM1 particles under actual operating conditions.<\/p>\n<p>A filter rated F7 from two different manufacturers can show significantly different performance under ISO 16890.<\/p>\n<h3>How Does ISO 16890 Address This?<\/h3>\n<ul>\n<li><strong>Classification by particle group: <\/strong>PM1 (0.3\u20131 \u00b5m), PM2.5 (1\u20132.5 \u00b5m) and PM10 (2.5\u201310 \u00b5m), aligned with the WHO\u2019s classification of air pollutants.<\/li>\n<li><strong>Testing after a discharge (electrostatic discharge) process, <\/strong>better reflecting real-world performance once the filter is in operation.<\/li>\n<li><strong>Clear grouping by application need:<\/strong><\/li>\n<li>ePM1 \u226550%: minimum level for modern offices.<\/li>\n<li>ePM1 \u226570%: suitable for buildings targeting WELL\/LEED standards.<\/li>\n<li>ePM1 \u226590%: used for hospitals and low-grade cleanrooms.<\/li>\n<\/ul>\n<h3>Approximate EN 779 \u2192 ISO 16890 Equivalence Table<\/h3>\n<table width=\"600\">\n<tbody>\n<tr>\n<td width=\"300\"><strong>EN 779<\/strong><\/td>\n<td width=\"300\"><strong>ISO 16890 Equivalent<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"300\">F6<\/td>\n<td width=\"300\">ePM2.5 \u226535\u201350%<\/td>\n<\/tr>\n<tr>\n<td width=\"300\">F7<\/td>\n<td width=\"300\">ePM1 \u226550\u201365%<\/td>\n<\/tr>\n<tr>\n<td width=\"300\">F8<\/td>\n<td width=\"300\">ePM1 \u226565\u201385%<\/td>\n<\/tr>\n<tr>\n<td width=\"300\">F9<\/td>\n<td width=\"300\">ePM1 \u226585\u201390%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h3>Air Filtech\u2019s Recommendation<\/h3>\n<p>When specifying filters for new projects, building owners and design firms should require suppliers to provide ISO 16890 certification rather than relying only on the F-class rating.<\/p>\n<p>Switching to ISO 16890 helps:<\/p>\n<ul>\n<li>Enable more transparent product comparison across suppliers.<\/li>\n<li>Properly assess the ability to control fine PM1 and PM2.5 dust.<\/li>\n<li>Ensure output air quality matches the HVAC design intent.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>As of July 1, 2018, the EN 779:2012 standard officially expired and was fully replaced by ISO 16890 \u2014 a new air filter classification system for ventilation based on performance against the particle groups PM1, PM2.5, and PM10. However, an Air Filtech survey of more than 200 mechanical and electrical (M&amp;E) contractors in Vietnam in [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":9593,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[449],"tags":[365,366,367,364],"class_list":["post-9383","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-standards","tag-en-779","tag-epm1","tag-hvac","tag-iso-1689"],"acf":[],"_links":{"self":[{"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/posts\/9383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/comments?post=9383"}],"version-history":[{"count":2,"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/posts\/9383\/revisions"}],"predecessor-version":[{"id":9473,"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/posts\/9383\/revisions\/9473"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/media\/9593"}],"wp:attachment":[{"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/media?parent=9383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/categories?post=9383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/airfiltech.vn\/en\/wp-json\/wp\/v2\/tags?post=9383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}