<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":5656,"date":"2021-09-30T16:10:30","date_gmt":"2021-09-30T08:10:30","guid":{"rendered":"https:\/\/smartairfilters.com\/learn\/?post_type=pauple_helpie&#038;p=5656"},"modified":"2021-09-30T16:11:49","modified_gmt":"2021-09-30T08:11:49","slug":"why-cant-monitors-measure-pm10-or-pm1-or-pm2-5-how-can-you-tell-how-accurate-a-monitor-really-is","status":"publish","type":"pauple_helpie","link":"https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/why-cant-monitors-measure-pm10-or-pm1-or-pm2-5-how-can-you-tell-how-accurate-a-monitor-really-is\/","title":{"rendered":"Why Can\u2019t Monitors Measure PM10 or PM1 or PM2.5? How Can You Tell How Accurate a Monitor Really is?"},"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\/air-quality-monitors\/'>Air Quality Monitors<\/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\/why-cant-monitors-measure-pm10-or-pm1-or-pm2-5-how-can-you-tell-how-accurate-a-monitor-really-is\/'>Why Can\u2019t Monitors Measure PM10 or PM1 or PM2.5? How Can You Tell How Accurate a Monitor Really is?<\/a> <\/div>\n<p>A typical household air quality monitor uses a laser to count and measure the number of particles in the air. This laser can\u2019t measure the exact number of\u00a0 PM10 or PM1 or PM2.5 particles, just the total number of \u2018all particles\u2019 in the air. Most air quality monitors use this number and a calibrated formula to estimate the corresponding PM2.5 concentration.<\/p>\n\n\n\n<p>Learn more: <a href=\"https:\/\/smartairfilters.com\/en\/blog\/are-particle-counters-and-government-machines-the-same\/\">How particle counters and air quality monitors work?<\/a><\/p>\n<div class='pauple-helpie-module article-voting'><span class='label'>Was this article useful?<\/span><span data-post-id='5656' 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>78<\/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>76<\/count><\/span><\/span><\/div><div style='clear:both;'><\/div>","protected":false},"excerpt":{"rendered":"<p>Knowledge Base &nbsp;&nbsp; &nbsp;&nbsp;Air Quality Monitors &nbsp;&nbsp; &nbsp;&nbsp;Why Can\u2019t Monitors Measure PM10 or PM1 or PM2.5? How Can You Tell How Accurate a Monitor Really is? A typical household air quality monitor uses a laser to count and measure the number of particles in the air. This laser can\u2019t measure &#8230; <a title=\"Why Can\u2019t Monitors Measure PM10 or PM1 or PM2.5? How Can You Tell How Accurate a Monitor Really is?\" class=\"read-more\" href=\"https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/why-cant-monitors-measure-pm10-or-pm1-or-pm2-5-how-can-you-tell-how-accurate-a-monitor-really-is\/\" aria-label=\"Read more about Why Can\u2019t Monitors Measure PM10 or PM1 or PM2.5? How Can You Tell How Accurate a Monitor Really is?\">Read more<\/a><\/p>\n","protected":false},"author":7807,"featured_media":0,"menu_order":0,"comment_status":"closed","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":[606],"helpie_tag":[920,67,1343,166,1344],"helpie_add_tag":[],"helpie_up_tag":[],"class_list":["post-5656","pauple_helpie","type-pauple_helpie","status-publish","format-standard","hentry","helpdesk_category-air-quality-monitors","helpie_tag-accurate","helpie_tag-monitor","helpie_tag-pm1","helpie_tag-pm10","helpie_tag-pm2"],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5656","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\/7807"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/comments?post=5656"}],"version-history":[{"count":1,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5656\/revisions"}],"predecessor-version":[{"id":5657,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5656\/revisions\/5657"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/media?parent=5656"}],"wp:term":[{"taxonomy":"helpdesk_category","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpdesk_category?post=5656"},{"taxonomy":"helpie_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_tag?post=5656"},{"taxonomy":"helpie_add_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_add_tag?post=5656"},{"taxonomy":"helpie_up_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_up_tag?post=5656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}