{"id":14317,"date":"2026-09-23T12:48:34","date_gmt":"2026-09-23T09:48:34","guid":{"rendered":"https:\/\/www.ulpatek.com\/technologie-de-filtration\/influence-de-la-methode-de-mesure\/"},"modified":"2026-09-29T15:58:19","modified_gmt":"2026-09-29T12:58:19","slug":"influence-de-la-methode-de-mesure","status":"publish","type":"page","link":"https:\/\/www.ulpatek.com\/fr\/technologie-de-filtration\/influence-de-la-methode-de-mesure\/","title":{"rendered":"Influence de la m\u00e9thode de mesure"},"content":{"rendered":"<div class=\"wpb-content-wrapper\" id=\"wpb-content-root\"><p>[vc_row][vc_column][vc_empty_space height=\u00a0\u00bb20&Prime;][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb3\/4&Prime;][vc_column_text]<\/p>\n<h2 style=\"font-size: 30px; font-weight: 600; color: #222; font-family: 'Open Sans', sans-serif; margin-top: 0; margin-bottom: 10px;\">Influence de la m\u00e9thode de mesure<\/h2>\n<p>[\/vc_column_text][vc_row_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;][vc_column_text css=\u00a0\u00bb.vc_custom_1526627305050{padding-top: 30px !important;}\u00a0\u00bb]Des travaux men\u00e9s sous l\u2019\u00e9gide de l\u2019ASHRAE et d\u2019organismes priv\u00e9s, notamment de fabricants de filtres, ont montr\u00e9 que la r\u00e9partition des particules atmosph\u00e9riques par taille, exprim\u00e9e en pourcentage, d\u00e9pend fortement de la m\u00e9thode de mesure. La figure ci-jointe montre comment cette r\u00e9partition granulom\u00e9trique varie selon le mode de mesure. Ainsi, les particules de moins de 1,0\u00a0micron ne repr\u00e9sentent que 3\u00a0% de la masse de l\u2019ensemble des poussi\u00e8res atmosph\u00e9riques, mais 98,5\u00a0% de leur nombre.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;][vc_single_image image=\u00a0\u00bb3222&Prime; img_size=\u00a0\u00bbfull\u00a0\u00bb onclick=\u00a0\u00bblink_image\u00a0\u00bb][\/vc_column_inner][\/vc_row_inner][vc_empty_space height=\u00a0\u00bb20&Prime;][vc_column_text]\u00c0 l\u2019inverse, les poussi\u00e8res atmosph\u00e9riques de 5,0 \u00e0 10\u00a0microns repr\u00e9sentent 52\u00a0% de la masse, mais seulement 0,175\u00a0% du nombre de particules. On retiendra que la quasi-totalit\u00e9 des particules pr\u00e9sentes dans l\u2019atmosph\u00e8re ont un diam\u00e8tre inf\u00e9rieur \u00e0 1\u00a0micron.[\/vc_column_text][vc_empty_space height=\u00a0\u00bb20&Prime;][vc_column_text css=\u00a0\u00bb.vc_custom_1526627378356{padding-bottom: 30px !important;}\u00a0\u00bb]<\/p>\n<h2 style=\"font-size: 30px; font-weight: 600; color: #222; font-family: 'Open Sans', sans-serif; margin-top: 0; margin-bottom: 10px;\"><span style=\"color: #17306d;\">Les gaz pr\u00e9sents dans l\u2019air<\/span><\/h2>\n<p>Outre les gaz qui composent normalement l\u2019atmosph\u00e8re, l\u2019air que nous respirons contient toute une s\u00e9rie de gaz, dont le m\u00e9lange et la concentration varient selon l\u2019endroit o\u00f9 l\u2019on se trouve. La plupart de ces gaz ont une odeur, agr\u00e9able (le parfum de la rose, par exemple) ou d\u00e9sagr\u00e9able (le sulfure d\u2019hydrog\u00e8ne des \u0153ufs pourris). Beaucoup sont corrosifs ou toxiques. Il existe heureusement des filtres fonctionnant par adsorption, capables de retenir la plupart de ces gaz dangereux.[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/4&Prime;][vc_widget_sidebar sidebar_id=\u00a0\u00bbproject-sidebar\u00a0\u00bb][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_empty_space height=\u00a0\u00bb20&Prime;][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb3\/4&Prime;][vc_column_text] Influence de la m\u00e9thode de mesure [\/vc_column_text][vc_row_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;][vc_column_text css=\u00a0\u00bb.vc_custom_1526627305050{padding-top: 30px !important;}\u00a0\u00bb]Des travaux men\u00e9s sous l\u2019\u00e9gide de l\u2019ASHRAE et d\u2019organismes priv\u00e9s, notamment de fabricants de filtres, ont montr\u00e9&hellip; <a class=\"read-more-link\" href=\"https:\/\/www.ulpatek.com\/fr\/technologie-de-filtration\/influence-de-la-methode-de-mesure\/\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":11060,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"footnotes":""},"class_list":["post-14317","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/pages\/14317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/comments?post=14317"}],"version-history":[{"count":0,"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/pages\/14317\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/pages\/11060"}],"wp:attachment":[{"href":"https:\/\/www.ulpatek.com\/fr\/wp-json\/wp\/v2\/media?parent=14317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}