{"id":605596,"date":"2024-11-05T22:28:53","date_gmt":"2024-11-05T22:28:53","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-21501-42007\/"},"modified":"2024-11-05T22:28:53","modified_gmt":"2024-11-05T22:28:53","slug":"iso-21501-42007","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-21501-42007\/","title":{"rendered":"ISO 21501-4:2007"},"content":{"rendered":"<p>ISO 21501-4:2007 describes a calibration and verification method for a light scattering airborne particle counter (LSAPC), which is used to measure the size and particle number concentration of particles suspended in air. The light scattering method described in ISO 21501-4:2007 is based on single particle measurements. The typical size range of particles measured by this method is between 0,1 \u00b5m and 10 \u00b5m in particle size.<\/p>\n<p>Instruments that conform to ISO 21501-4:2007 are used for the classification of air cleanliness in cleanrooms and associated controlled environments in accordance with ISO 14644-1, as well as the measurement of number and size distribution of particles in various environments.<\/p>\n<p>The following are within the scope of ISO 21501-4:2007:<\/p>\n<ul>\n<li>size calibration;<\/li>\n<li>verification of size setting;<\/li>\n<li>counting efficiency;<\/li>\n<li>size resolution;<\/li>\n<li>false count rate;<\/li>\n<li>maximum particle number concentration;<\/li>\n<li>sampling flow rate;<\/li>\n<li>sampling time;<\/li>\n<li>sampling volume;<\/li>\n<li>calibration interval;<\/li>\n<li>test report.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p><b>Determination of particle size distribution \u2014 Single particle light interaction methods \u2014 Part 4: Light scattering airborne particle counter for clean spaces<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>2007-05<\/td>\n<td>24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":605607,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[294,2634],"product_tag":[],"class_list":{"0":"post-605596","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-19-120","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/605596","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/605607"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=605596"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=605596"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=605596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}