<div class='ui dimmer modals page' style='display: none;'><div id='helpie-password-modal' class='pauple_helpie ui modal small' style='display: none;'><div class='ui header'><i class='circular lock icon'></i> Password Protected</div><div class='item-content'><br /><label for='password_check'>Enter Password : </label><p><input type='password' id='password_check' name='password_check' class='password' value='' required></p></div><div class='actions'><div class='ui black deny button'>Nope</div><div class='ui positive right labeled icon button'>Yep, that's right!<i class='checkmark icon'></i></div></div><div class='clear'></div></div></div>{"id":5148,"date":"2020-08-18T13:00:43","date_gmt":"2020-08-18T05:00:43","guid":{"rendered":"https:\/\/smartairfilters.com\/learn\/?post_type=pauple_helpie&#038;p=5148"},"modified":"2020-12-09T12:23:40","modified_gmt":"2020-12-09T04:23:40","slug":"standard-test-measure-cadr","status":"publish","type":"pauple_helpie","link":"https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/standard-test-measure-cadr\/","title":{"rendered":"What are the Standards for Measuring CADR?"},"content":{"rendered":"<div class='breadcrumbs pauple_helpie_breadcrumbs'><a class='mainpage-link' href='https:\/\/smartairfilters.com\/learn\/'>Knowledge Base<\/a> <span class='helpiekb_separator'> &nbsp;&nbsp; <i class='fa fa-angle-right' aria-hidden='true'><\/i>&nbsp;&nbsp;<\/span><a class='mainpage-link' href='https:\/\/smartairfilters.com\/learn\/cat\/protecting-yourself\/'>Protecting Yourself<\/a> <span class='helpiekb_separator'> &nbsp;&nbsp; <i class='fa fa-angle-right' aria-hidden='true'><\/i>&nbsp;&nbsp;<\/span><a class='mainpage-link' href='https:\/\/smartairfilters.com\/learn\/cat\/air-purifiers\/'>Air Purifiers<\/a> <span class='helpiekb_separator'> &nbsp;&nbsp; <i class='fa fa-angle-right' aria-hidden='true'><\/i>&nbsp;&nbsp;<\/span><a class='mainpage-link' href='https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/standard-test-measure-cadr\/'>What are the Standards for Measuring CADR?<\/a> <\/div><p>CADR or &#8216;clean air delivery rate&#8217; of an air purifier is typically measured using one of two standards: the <a href=\"https:\/\/ahamverifide.org\/wp-content\/uploads\/2019\/07\/Scope-of-Air-Cleaner-Certification.pdf\">AHAM standard<\/a> in the US, or the <a href=\"https:\/\/www.sgs.com\/en\/news\/2018\/04\/air-purifying-devices-accessing-chinas-newly-regulated-market\">GB 18801-2015 standard<\/a> in China.<\/p>\n<p>&nbsp;<\/p>\n<p>The AHAM standard measures an air purifier&#8217;s filtration effectiveness for smoke, dust and pollen. These particles sizes range from 0.10 to 11 microns in diameter. The AHAM test is performed in a 1008ft<sup>3<\/sup> (28.3m<sup>3<\/sup>) room.<\/p>\n<p>&nbsp;<\/p>\n<p>The GB 18801-2015 standard measures an air purifier&#8217;s filtration effectiveness for smoke (particles) or VOCs. Cigarettes are used for the particle tests, and any form of VOC can be used for the VOC tests (e.g. benzene, formaldehyde). Most often, formaldehyde is tested. The GB 18801-2015 tests are done in a 30m<sup>3<\/sup> room (1059ft<sup>3<\/sup>).<\/p>\n<p>&nbsp;<\/p>\n<p>Learn More: <a href=\"https:\/\/smartairfilters.com\/en\/blog\/cadr-airflow-difference\/\">What is CADR and why is it important \u00bb<\/a><\/p>\n<div class='pauple-helpie-module article-voting'><span class='label'>Was this article useful?<\/span><span data-post-id='5148' data-user-id='0' class='icon-tray'><span  data-vote='thumbs up outline' class=' voting-icon thumbs up outline '><i data-content='thumbs up outline' class='thumbs up outline outline icon' aria-hidden='true'><\/i><count>3<\/count><\/span><span  data-vote='thumbs down outline' class=' voting-icon thumbs down outline '><i data-content='thumbs down outline' class='thumbs down outline outline icon' aria-hidden='true'><\/i><count>0<\/count><\/span><\/span><\/div><div style='clear:both;'><\/div>","protected":false},"excerpt":{"rendered":"<p>Knowledge Base &nbsp;&nbsp; &nbsp;&nbsp;Protecting Yourself &nbsp;&nbsp; &nbsp;&nbsp;Air Purifiers &nbsp;&nbsp; &nbsp;&nbsp;What are the Standards for Measuring CADR? CADR or &#8216;clean air delivery rate&#8217; of an air purifier is typically measured using one of two standards: the AHAM standard in the US, or the GB 18801-2015 standard in China. &nbsp; The AHAM &#8230; <a title=\"What are the Standards for Measuring CADR?\" class=\"read-more\" href=\"https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/standard-test-measure-cadr\/\" aria-label=\"Read more about What are the Standards for Measuring CADR?\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"helpdesk_category":[673],"helpie_tag":[1269,296,266,239,145,164,262,191,1159,165,342],"helpie_add_tag":[],"helpie_up_tag":[],"class_list":["post-5148","pauple_helpie","type-pauple_helpie","status-publish","format-standard","hentry","helpdesk_category-air-purifiers","helpie_tag-aham","helpie_tag-air","helpie_tag-air-purifier","helpie_tag-airflow","helpie_tag-cadr","helpie_tag-efficiency","helpie_tag-filter","helpie_tag-formaldehyde","helpie_tag-performance","helpie_tag-pm2-5","helpie_tag-smoke"],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie"}],"about":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/types\/pauple_helpie"}],"author":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/comments?post=5148"}],"version-history":[{"count":3,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5148\/revisions"}],"predecessor-version":[{"id":5201,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5148\/revisions\/5201"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/media?parent=5148"}],"wp:term":[{"taxonomy":"helpdesk_category","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpdesk_category?post=5148"},{"taxonomy":"helpie_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_tag?post=5148"},{"taxonomy":"helpie_add_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_add_tag?post=5148"},{"taxonomy":"helpie_up_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_up_tag?post=5148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}