{"id":96,"date":"2026-10-16T08:55:37","date_gmt":"2026-10-16T08:55:37","guid":{"rendered":"https:\/\/fgvhp.com\/vhp-knowledge\/cleanroom-qualification-tests-iso-14644-3\/"},"modified":"2026-10-16T10:24:42","modified_gmt":"2026-10-16T10:24:42","slug":"cleanroom-qualification-tests-iso-14644-3","status":"publish","type":"post","link":"https:\/\/fgvhp.com\/de\/vhp-knowledge\/cleanroom-qualification-tests-iso-14644-3\/","title":{"rendered":"Pr\u00fcfungen zur Reinraumqualifizierung: Was ISO 14644-3 abdeckt und in welcher Reihenfolge"},"content":{"rendered":"\n\n<section class=\"phero\"><div class=\"wrap\">\n  <div class=\"crumb\"><a href=\"\/\">Home<\/a> \/ <a href=\"\/vhp-knowledge\/\">VHP Knowledge<\/a> \/ <span>Cleanroom qualification<\/span><\/div>\n  <span class=\"mono eyebrow\">Cleanroom qualification<\/span>\n  <h1>Cleanroom Qualification Tests: What ISO 14644-3 Covers and in What Order<\/h1>\n  <p class=\"lead\">A cleanroom is qualified by a set of tests, not by a particle count alone. Airflow, filter integrity, pressure, airflow pattern and recovery all have to be proven before the classification result means anything. This guide lists the tests described in ISO 14644-3, the order they are usually run in, the occupancy state for each, and how often they are repeated.<\/p>\n  <div class=\"ameta\"><span>Fenggu VHP engineering team<\/span><span>3 min read<\/span><span>Updated October 2026<\/span><\/div>\n<\/div><\/section>\n\n<section class=\"fgv-sec\" style=\"padding-top:48px\"><div class=\"wrap\"><div class=\"art\">\n  <div class=\"keyp\"><b>Key points<\/b><ul><li>Classification by particle count is the last test, not the first. Airflow, filter integrity and pressure must be right before counting means anything.<\/li><li>ISO 14644-3 describes the test methods; ISO 14644-1 classifies, ISO 14644-2 sets monitoring and requalification.<\/li><li>Most tests are run &quot;as built&quot; or &quot;at rest&quot; during qualification; the room is then proven &quot;in operation&quot; with people and process running.<\/li><li>ISO 14644-2 sets the maximum interval for repeating the particle classification: 6 months for ISO 5 and cleaner, 12 months for other classes.<\/li><li>Each test needs a written method, calibrated instruments and acceptance criteria agreed before testing starts.<\/li><\/ul><\/div>\n  \n  <h2>Three standards, three jobs<\/h2>\n<table>\n<thead><tr><th>Standard<\/th><th>What it does<\/th><\/tr><\/thead>\n<tbody>\n<tr><th>ISO 14644-1<\/th><td>Classifies air cleanliness by particle concentration \u2014 the ISO class.<\/td><\/tr>\n<tr><th>ISO 14644-2<\/th><td>Sets how the room is monitored to show it stays in its class, and the maximum time between classifications.<\/td><\/tr>\n<tr><th>ISO 14644-3<\/th><td>Describes the test methods: airflow, filter leak, pressure, visualisation, recovery, temperature, humidity and others.<\/td><\/tr>\n<\/tbody>\n<\/table>\n<p>In a GMP facility the same tests sit inside the qualification lifecycle: design qualification of the HVAC and room layout, installation qualification of what was built, operational qualification of how it performs, and performance qualification in normal use. EU GMP Annex 1 expects cleanrooms to be qualified and requalified, with the tests and acceptance criteria justified by risk.<\/p>\n\n<h2>The test set<\/h2>\n<table>\n<thead><tr><th>Test<\/th><th>What it proves<\/th><th>Typical state<\/th><\/tr><\/thead>\n<tbody>\n<tr><th>Airflow volume or velocity<\/th><td>The room receives the design supply air; in unidirectional zones, the air velocity over the work area is within range.<\/td><td>As built \/ at rest<\/td><\/tr>\n<tr><th>Installed filter leak test<\/th><td>HEPA filters, gaskets and frames have no leaks after installation.<\/td><td>As built \/ at rest<\/td><\/tr>\n<tr><th>Pressure difference<\/th><td>Each room holds its design pressure relative to neighbouring rooms, so air flows from cleaner to less clean areas.<\/td><td>At rest<\/td><\/tr>\n<tr><th>Airflow direction and visualisation<\/th><td>Air moves the way the design intends, particularly over critical zones and at doors.<\/td><td>At rest, then in operation<\/td><\/tr>\n<tr><th>Recovery<\/th><td>How quickly the room returns to its clean state after a particle challenge (100:1 recovery time).<\/td><td>At rest<\/td><\/tr>\n<tr><th>Temperature and humidity<\/th><td>The room holds the conditions the process and people need.<\/td><td>At rest \/ in operation<\/td><\/tr>\n<tr><th>Containment leak<\/th><td>Unfiltered air does not leak in from surrounding spaces through joints and penetrations.<\/td><td>As built \/ at rest<\/td><\/tr>\n<tr><th>Particle classification<\/th><td>Airborne particle concentration meets the ISO class.<\/td><td>At rest and in operation<\/td><\/tr>\n<\/tbody>\n<\/table>\n<p>The filter leak test is described in <a href=\"https:\/\/fenggu-bio.com\/hepa-filter-in-situ-leak-test\/\" target=\"_blank\" rel=\"noopener\">HEPA filter in-situ leak testing<\/a>. Visualisation methods for isolators, which apply equally to unidirectional zones in rooms, are in <a href=\"\/vhp-knowledge\/isolator-airflow-visualisation-smoke-study\/\">airflow visualisation smoke studies<\/a>.<\/p>\n\n<h2>The order that works<\/h2>\n<ol>\n<li><strong>Balance the HVAC first.<\/strong> Airflow volumes and room pressures are set by the HVAC contractor before formal testing. Testing an unbalanced system wastes the test.<\/li>\n<li><strong>Airflow.<\/strong> Measure supply volumes or velocities. If they are wrong, every later result changes when they are corrected.<\/li>\n<li><strong>Filter leak test.<\/strong> A leaking filter can pass a particle count on a quiet day and fail on a busy one.<\/li>\n<li><strong>Pressure differences.<\/strong> With airflow fixed, confirm the pressure cascade and door alarms.<\/li>\n<li><strong>Visualisation.<\/strong> Confirm airflow patterns, especially at critical zones and between rooms.<\/li>\n<li><strong>Recovery.<\/strong> Measure how fast the room cleans up after a challenge.<\/li>\n<li><strong>Particle classification at rest,<\/strong> then <strong>in operation<\/strong> with people and process present.<\/li>\n<\/ol>\n<p>If any test fails, correct the cause and repeat the tests that depend on it. A change to supply airflow, for example, means repeating pressure, recovery and classification.<\/p>\n\n<h2>Occupancy states<\/h2>\n<ul>\n<li><strong>As built:<\/strong> the installation is complete and running, with no production equipment or people.<\/li>\n<li><strong>At rest:<\/strong> production equipment installed and operating as agreed, but no people present.<\/li>\n<li><strong>In operation:<\/strong> the room working normally, with the agreed number of people.<\/li>\n<\/ul>\n<p>Agree the state for each test in the protocol. An &#8220;in operation&#8221; classification should reflect a realistic worst case \u2014 the maximum number of people and the most particle-generating activities \u2014 not a quiet shift.<\/p>\n\n<h2>How many locations and how long<\/h2>\n<p>The number of sampling locations for classification comes from the room area, and the sample volume from the class limit of the largest particle size considered. The <a href=\"\/tools\/iso-14644-1-calculator\/\">ISO 14644-1 calculator<\/a> works both out. For recovery, the <a href=\"\/tools\/air-change-rate-recovery-time-calculator\/\">air change and recovery time calculator<\/a> gives an estimate to compare the measured value against.<\/p>\n\n<h2>Requalification<\/h2>\n<table>\n<thead><tr><th>Test<\/th><th>Repeat<\/th><\/tr><\/thead>\n<tbody>\n<tr><th>Particle classification<\/th><td>ISO 14644-2: at most every 6 months for ISO 5 and cleaner, at most every 12 months for other classes<\/td><\/tr>\n<tr><th>Other tests (airflow, filter leak, pressure, recovery, visualisation)<\/th><td>At intervals set by risk assessment and the site&#8217;s qualification policy<\/td><\/tr>\n<tr><th>After a change<\/th><td>Repeat the tests the change can affect: filter replacement, HVAC modification, layout change, extended shutdown<\/td><\/tr>\n<\/tbody>\n<\/table>\n<p>Continuous or frequent monitoring that shows the room stays in control can support the requalification decision, but it does not replace requalification.<\/p>\n\n<h2>What the report should contain<\/h2>\n<ul>\n<li>The room, its class and the occupancy state for each test.<\/li>\n<li>Test methods with reference to ISO 14644-3 or the site procedure.<\/li>\n<li>Instrument identification and calibration status.<\/li>\n<li>Locations on a drawing, raw results and the acceptance criteria.<\/li>\n<li>Deviations, their investigation and any retests.<\/li>\n<\/ul>\n  <figure class=\"photo\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/site\/in-situ-decontamination-exhaust-unit-03.jpg\" alt=\"Fenggu in-situ decontamination exhaust unit with HEPA filter\" loading=\"lazy\" style=\"max-height:380px;object-fit:contain;padding:20px 0;background:#fff\"><figcaption>HEPA terminals and exhaust housings are tested for installed leaks before the room is classified.<\/figcaption><\/figure>\n  <div class=\"refs\"><p><b>References<\/b><\/p><p>ISO 14644-1:2015, Classification of air cleanliness by particle concentration<\/p><p>ISO 14644-2:2015, Monitoring to provide evidence of cleanroom performance<\/p><p>ISO 14644-3:2019, Test methods<\/p><p>EU GMP Annex 1 (2022), Manufacture of Sterile Medicinal Products<\/p><\/div>\n<\/div><\/div><\/section>\n\n<section class=\"fgv-sec alt\"><div class=\"wrap\">\n  <span class=\"mono eyebrow\">Equipment<\/span><h2>Fenggu equipment for this<\/h2>\n  <div class=\"opts\"><a class=\"opt\" href=\"https:\/\/fenggu-bio.com\/products\/in-situ-decontamination-exhaust-unit\/\" target=\"_blank\" rel=\"noopener\"><span class=\"mono\">FG-AIR-ISD<\/span><h3>In-situ decontamination exhaust unit<\/h3><p>Exhaust HEPA housing for containment areas, designed for safe filter change and testing in place.<\/p><span class=\"go\">View specifications \u2192<\/span><\/a><a class=\"opt\" href=\"https:\/\/fenggu-bio.com\/products\/hvac-integrated-vhp-system\/\" target=\"_blank\" rel=\"noopener\"><span class=\"mono\">FG-VHP-C1000 \/ C2000<\/span><h3>HVAC-integrated VHP system<\/h3><p>Distributes vapour through the existing AHU to treat a whole suite. Standard capacities 1,000 and 2,000 m\u00b3.<\/p><span class=\"go\">View specifications \u2192<\/span><\/a><a class=\"opt\" href=\"https:\/\/fenggu-bio.com\/products\/vhp-pass-box\/\" target=\"_blank\" rel=\"noopener\"><span class=\"mono\">FG-PB-VHP<\/span><h3>VHP pass box<\/h3><p>Integrated VHP with real-time temperature, humidity, pressure and H\u2082O\u2082 concentration monitoring and printed cycle records.<\/p><span class=\"go\">View specifications \u2192<\/span><\/a><\/div>\n  <p style=\"margin-top:24px\">Related application guides: <a class=\"go\" href=\"\/applications\/cleanroom-room-decontamination\/\">Cleanroom and room decontamination<\/a> \u00b7 <a class=\"go\" href=\"\/applications\/hvac-integrated-vhp\/\">HVAC-integrated VHP<\/a><\/p>\n<\/div><\/section>\n\n<section class=\"fgv-sec\"><div class=\"wrap narrow\">\n  <span class=\"mono eyebrow\">FAQ<\/span><h2>Common questions<\/h2>\n  <div class=\"faq\"><details><summary>Which tests are needed to qualify a cleanroom?<\/summary><p>Typically airflow volume or velocity, installed HEPA filter leak, pressure difference, airflow visualisation, recovery, temperature and humidity, and particle classification, with methods described in ISO 14644-3.<\/p><\/details><details><summary>In what order should cleanroom tests be done?<\/summary><p>Balance the HVAC, then airflow, filter leak test, pressure differences, airflow visualisation, recovery, and finally particle classification at rest and in operation.<\/p><\/details><details><summary>How often must a cleanroom be reclassified?<\/summary><p>ISO 14644-2 sets a maximum of 6 months for ISO 5 and cleaner and 12 months for other classes. Other tests are repeated at intervals set by risk assessment.<\/p><\/details><details><summary>What is the difference between at rest and in operation?<\/summary><p>At rest means the equipment is installed and running but no people are present. In operation means the room is working normally with the agreed number of people.<\/p><\/details><details><summary>Does ISO 14644-3 set acceptance criteria?<\/summary><p>It describes test methods. Acceptance criteria come from the classification, the design and regulatory requirements such as EU GMP Annex 1, and are fixed in the protocol.<\/p><\/details><\/div>\n<\/div><\/section>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Which tests are needed to qualify a cleanroom?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Typically airflow volume or velocity, installed HEPA filter leak, pressure difference, airflow visualisation, recovery, temperature and humidity, and particle classification, with methods described in ISO 14644-3.\"}},{\"@type\":\"Question\",\"name\":\"In what order should cleanroom tests be done?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Balance the HVAC, then airflow, filter leak test, pressure differences, airflow visualisation, recovery, and finally particle classification at rest and in operation.\"}},{\"@type\":\"Question\",\"name\":\"How often must a cleanroom be reclassified?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO 14644-2 sets a maximum of 6 months for ISO 5 and cleaner and 12 months for other classes. Other tests are repeated at intervals set by risk assessment.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between at rest and in operation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"At rest means the equipment is installed and running but no people are present. In operation means the room is working normally with the agreed number of people.\"}},{\"@type\":\"Question\",\"name\":\"Does ISO 14644-3 set acceptance criteria?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It describes test methods. Acceptance criteria come from the classification, the design and regulatory requirements such as EU GMP Annex 1, and are fixed in the protocol.\"}}]}<\/script>\n\n<section class=\"fgv-sec\" style=\"padding-top:0\"><div class=\"wrap\"><div class=\"cta\">\n  <div><span class=\"mono eyebrow\">Free application review<\/span><h2>Have a specific space or load in mind?<\/h2><p>Send the volume, the materials and what you need to prove. An engineer replies with a recommended setup and what validation will involve.<\/p><p class=\"cta-direct\">Prefer to talk directly?<br><a href=\"https:\/\/wa.me\/8618321459135\" target=\"_blank\" rel=\"noopener nofollow\"><svg width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path fill=\"currentColor\" d=\"M17.47 14.38c-.3-.15-1.76-.87-2.03-.97-.27-.1-.47-.15-.67.15-.2.3-.77.97-.94 1.16-.17.2-.35.22-.64.08-.3-.15-1.26-.46-2.39-1.48-.88-.79-1.48-1.76-1.65-2.06-.17-.3-.02-.46.13-.6.13-.14.3-.35.45-.52.15-.18.2-.3.3-.5.1-.2.05-.37-.03-.52-.07-.15-.67-1.61-.92-2.2-.24-.58-.49-.5-.67-.51h-.57c-.2 0-.52.07-.79.37-.27.3-1.04 1.02-1.04 2.48s1.07 2.88 1.21 3.07c.15.2 2.1 3.2 5.08 4.49.71.31 1.26.49 1.7.63.71.23 1.36.19 1.87.12.57-.09 1.76-.72 2-1.41.25-.7.25-1.29.18-1.41-.08-.13-.27-.2-.57-.35M12.05 21.78a9.87 9.87 0 0 1-5.03-1.38l-.36-.21-3.74.98 1-3.65-.24-.37a9.86 9.86 0 0 1-1.51-5.26c0-5.45 4.44-9.88 9.89-9.88a9.88 9.88 0 0 1 9.88 9.89c0 5.45-4.44 9.88-9.89 9.88M20.52 3.45A11.82 11.82 0 0 0 12.05 0C5.46 0 .1 5.36.1 11.89c0 2.1.55 4.14 1.6 5.95L0 24l6.34-1.65a11.94 11.94 0 0 0 5.71 1.45h.01c6.58 0 11.94-5.36 11.94-11.89 0-3.18-1.24-6.17-3.48-8.42\"\/><\/svg>WhatsApp +86 183 2145 9135<\/a><a href=\"mailto:info@fenggu-bio.com\"><svg width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M3 5h18v14H3z\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><path d=\"m3 6 9 7 9-7\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><\/svg>info@fenggu-bio.com<\/a><\/p><\/div>\n  <div><div class='fluentform ff-default fluentform_wrapper_1 ffs_default_wrap'><form data-form_id=\"1\" id=\"fluentform_1\" class=\"frm-fluent-form fluent_form_1 ff-el-form-top ff_form_instance_1_1 ff-form-loading ffs_default\" data-form_instance=\"ff_form_instance_1_1\" method=\"POST\" data-turnstile_key=\"0x4AAAAAAFR_A6IRFH-zWvr4\" ><fieldset  style=\"border: none!important;margin: 0!important;padding: 0!important;background-color: transparent!important;box-shadow: none!important;outline: none!important; min-inline-size: 100%;\">\n                    <legend class=\"ff_screen_reader_title\" style=\"display: block; margin: 0!important;padding: 0!important;height: 0!important;text-indent: -999999px;width: 0!important;overflow:hidden;\">Contact Form Demo<\/legend>        <div\n                style=\"display: none!important; position: absolute!important; transform: translateX(1000%)!important;\"\n                class=\"ff-el-group ff-hpsf-container\"\n        >\n            <div class=\"ff-el-input--label asterisk-right\">\n                <label for=\"ff_1_item_sf\" aria-label=\"Subscribe\">\n                    Subscribe                <\/label>\n            <\/div>\n            <div class=\"ff-el-input--content\">\n                <input type=\"text\"\n                       name=\"item_1__fluent_sf\"\n                       class=\"ff-el-form-control\"\n                       id=\"ff_1_item_sf\"\n                \/>\n            <\/div>\n        <\/div>\n        <input type='hidden' name='__fluent_form_embded_post_id' value='96' \/><input type=\"hidden\" id=\"_fluentform_1_fluentformnonce\" name=\"_fluentform_1_fluentformnonce\" value=\"96378dc817\" \/><input type=\"hidden\" name=\"_wp_http_referer\" value=\"\/de\/wp-json\/wp\/v2\/posts\/96\" \/><div data-type=\"name-element\" data-name=\"names\" class=\" ff-field_container ff-name-field-wrapper\" ><div class='ff-t-container'><div class='ff-t-cell '><div class='ff-el-group'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_1_names_first_name_' id='label_ff_1_names_first_name_' >First Name<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"names[first_name]\" id=\"ff_1_names_first_name_\" class=\"ff-el-form-control\" placeholder=\"First Name\" aria-invalid=\"false\" aria-required=false><\/div><\/div><\/div><div class='ff-t-cell '><div class='ff-el-group'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_1_names_last_name_' id='label_ff_1_names_last_name_' >Last Name<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"names[last_name]\" id=\"ff_1_names_last_name_\" class=\"ff-el-form-control\" placeholder=\"Last Name\" aria-invalid=\"false\" aria-required=false><\/div><\/div><\/div><\/div><\/div><div class='ff-el-group'><div class=\"ff-el-input--label ff-el-is-required asterisk-right\"><label for='ff_1_email' id='label_ff_1_email' aria-label=\"Email\">Email<\/label><\/div><div class='ff-el-input--content'><input type=\"email\" name=\"email\" id=\"ff_1_email\" class=\"ff-el-form-control\" placeholder=\"Email Address\" data-name=\"email\"  aria-invalid=\"false\" aria-required=true><\/div><\/div><div class='ff-el-group'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_1_subject' id='label_ff_1_subject' aria-label=\"Subject\">Subject<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"subject\" class=\"ff-el-form-control\" placeholder=\"Subject\" data-name=\"subject\" id=\"ff_1_subject\"  aria-invalid=\"false\" aria-required=false><\/div><\/div><div class='ff-el-group'><div class=\"ff-el-input--label ff-el-is-required asterisk-right\"><label for='ff_1_message' id='label_ff_1_message' aria-label=\"Your Message\">Your Message<\/label><\/div><div class='ff-el-input--content'><textarea aria-required=\"true\" aria-labelledby=\"label_ff_1_message\" name=\"message\" id=\"ff_1_message\" class=\"ff-el-form-control\" placeholder=\"Your Message\" rows=\"4\" cols=\"2\" data-name=\"message\" ><\/textarea><\/div><\/div><div class='ff-el-group ' style='margin-bottom: 0;'><div class='ff-el-input--content'><div data-fluent_id='1' name='cf-turnstile-response'><div\n\t\tdata-sitekey='0x4AAAAAAFR_A6IRFH-zWvr4'\n\t\tdata-theme='light'\n\t\tid='fluentform-turnstile-1-1'\n\t\tclass='ff-el-turnstile cf-turnstile'\n\t\tdata-appearance='interaction-only'><\/div><\/div><\/div><\/div><div class='ff-el-group ff-text-left ff_submit_btn_wrapper'><button type=\"submit\" class=\"ff-btn ff-btn-submit ff-btn-md ff_btn_style\"  aria-label=\"Submit Form\">Submit Form<\/button><\/div><\/fieldset><\/form><div id='fluentform_1_errors' class='ff-errors-in-stack ff_form_instance_1_1 ff-form-loading_errors ff_form_instance_1_1_errors'><\/div><\/div>            <script type=\"text\/javascript\">\n                window.fluent_form_ff_form_instance_1_1 = {\"id\":\"1\",\"ajaxUrl\":\"https:\\\/\\\/fgvhp.com\\\/wp-admin\\\/admin-ajax.php\",\"settings\":{\"layout\":{\"labelPlacement\":\"top\",\"helpMessagePlacement\":\"with_label\",\"errorMessagePlacement\":\"inline\",\"cssClassName\":\"\",\"asteriskPlacement\":\"asterisk-right\"},\"restrictions\":{\"denyEmptySubmission\":{\"enabled\":false}}},\"form_instance\":\"ff_form_instance_1_1\",\"form_id_selector\":\"fluentform_1\",\"rules\":{\"names[first_name]\":{\"required\":{\"value\":false,\"message\":\"This field is required\"}},\"names[middle_name]\":{\"required\":{\"value\":false,\"message\":\"This field is required\"}},\"names[last_name]\":{\"required\":{\"value\":false,\"message\":\"This field is required\"}},\"email\":{\"required\":{\"value\":true,\"message\":\"This field is required\"},\"email\":{\"value\":true,\"message\":\"This field must contain a valid email\"}},\"subject\":{\"required\":{\"value\":false,\"message\":\"This field is required\"}},\"message\":{\"required\":{\"value\":true,\"message\":\"This field is required\"}},\"cf-turnstile-response\":[]},\"debounce_time\":300,\"file_upload_settings\":[]};\n                            <\/script>\n            <\/div>\n<\/div><\/div><\/section>\n\n","protected":false},"excerpt":{"rendered":"<p>Die Pr\u00fcfungen nach ISO 14644-3 zur Reinraumqualifizierung, ihre Durchf\u00fchrungsreihenfolge, die Zust\u00e4nde \u201eim Ruhezustand\u201c und \u201eim Betrieb\u201c sowie Requalifizierungsintervalle nach ISO 14644-2.<\/p>","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[9],"tags":[],"class_list":["post-96","post","type-post","status-publish","format-standard","hentry","category-cleanroom-qualification"],"_links":{"self":[{"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/posts\/96","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/comments?post=96"}],"version-history":[{"count":1,"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/posts\/96\/revisions"}],"predecessor-version":[{"id":100,"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/posts\/96\/revisions\/100"}],"wp:attachment":[{"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/media?parent=96"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/categories?post=96"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fgvhp.com\/de\/wp-json\/wp\/v2\/tags?post=96"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}