{"id":31915,"date":"2026-07-10T10:26:24","date_gmt":"2026-07-10T08:26:24","guid":{"rendered":"https:\/\/www.delta-2000.com\/iso-14644-what-the-international-standard-says-about-cleanrooms\/"},"modified":"2026-07-10T10:26:25","modified_gmt":"2026-07-10T08:26:25","slug":"iso-14644-what-the-international-standard-says-about-cleanrooms","status":"publish","type":"post","link":"https:\/\/www.delta-2000.com\/en\/iso-14644-what-the-international-standard-says-about-cleanrooms\/","title":{"rendered":"ISO 14644: What the International Standard Says About Cleanrooms"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"31915\" class=\"elementor elementor-31915 elementor-31867\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bb18c4c e-flex e-con-boxed e-con e-parent\" data-id=\"bb18c4c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-043a7c0 elementor-widget elementor-widget-text-editor\" data-id=\"043a7c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>When it comes to <strong>cleanrooms<\/strong>, the <strong>ISO 14644 standard<\/strong> is the <strong>definitive international benchmark<\/strong>.<\/p><p>It defines how to classify air cleanliness, how to design and construct controlled-contamination environments, how to monitor them over time, and how to conduct verification tests. Yet, despite its importance, the standard is often misunderstood or applied incompletely\u2014with potentially serious consequences in terms of noncompliance and production inefficiency. <\/p><p>In this article, <strong>Delta 2000<\/strong> \u2014 <strong>a leading international partner in the design and manufacture of cleanrooms<\/strong> \u2014provides a <strong>comprehensive, sector-specific overview of the ISO 14644 standard<\/strong>: what it requires, how it is applied in various industrial sectors, and how it relates to the main national and international reference standards.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc08faa elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"bc08faa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da7cc10 elementor-widget elementor-widget-heading\" data-id=\"da7cc10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">1. The ISO 14644 Series: Structure and Scope<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f3c6b9f elementor-widget elementor-widget-text-editor\" data-id=\"f3c6b9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>ISO 14644<\/strong> standard is not a single document, but a series consisting of several parts, each dedicated to a specific aspect of cleanrooms and controlled-contamination environments (cleanrooms and clean zones).<\/p><p>The series is developed<strong>by ISO\/TC 209<\/strong> \u2014the international technical committee dedicated to this field\u2014and is periodically updated to reflect technological and regulatory developments in the sector.<\/p><p>The provisions currently in force that are of the greatest practical significance are:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-56d7b85 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"56d7b85\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-square-full\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M512 512H0V0h512v512z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><strong>ISO 14644-1 (2015)<\/strong>: Classification of air cleanliness based on particle concentration. This is the core part of the series: it defines the cleanliness classes from ISO 1 to ISO 9, the sampling methods, and the statistical criteria for classification. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-square-full\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M512 512H0V0h512v512z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><strong>ISO 14644-2 (2015)<\/strong>: Monitoring to demonstrate ongoing compliance with ISO 14644-1. It specifies the frequency and methods of periodic monitoring required to maintain the classification over time. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-square-full\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M512 512H0V0h512v512z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><strong>ISO 14644-3 (2019)<\/strong>: Test Methods. Describes procedures for verifying the performance of cleanrooms: filter testing, air velocity measurement, physical barrier leak testing, and differential pressure verification. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-square-full\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M512 512H0V0h512v512z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><strong>ISO 14644-4 (2022)<\/strong>: Design, Construction, and Commissioning. This standard defines the requirements and recommendations for the design and installation of new cleanrooms, including criteria for selecting materials and HVAC systems. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-square-full\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M512 512H0V0h512v512z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><strong>ISO 14644-5 (2004)<\/strong>: Operational Management. This standard covers the operating procedures, staff training, maintenance, and documentation required for the day-to-day management of cleanrooms. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-square-full\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M512 512H0V0h512v512z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><strong>ISO 14644-10 (2013)<\/strong>: Classification of surface cleanliness based on chemical concentration. This standard extends the concept of classification from air cleanliness to surface cleanliness, which is particularly relevant for the electronics and pharmaceutical industries. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d4c5c5 elementor-widget elementor-widget-text-editor\" data-id=\"3d4c5c5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe <strong>scope of the<\/strong> <strong>ISO 14644<\/strong> series is broad: it applies to any environment in which the concentration of airborne particles must be controlled to ensure the quality of the production process or the safety of the final product.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6da74d elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"d6da74d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-278c12f elementor-widget elementor-widget-heading\" data-id=\"278c12f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">2. ISO 14644-1: Air Cleanliness Classification<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebd0015 elementor-widget elementor-widget-text-editor\" data-id=\"ebd0015\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Part 1 of the standard is the one that anyone working in <strong>cleanrooms<\/strong> deals with on a daily basis. It introduces the ISO classification system\u2014ranging from ISO 1 (the most restrictive) to ISO 9 (the least restrictive)\u2014based on the maximum allowable concentration of particles per cubic meter of air, for particles of various sizes. <\/p><p><strong>Classification<\/strong> is performed using <strong>measurements taken with optical particle counters<\/strong>, according to a statistical sampling plan that takes the size of the environment into account.<\/p><p>The results must comply with the limits specified in the standard for the declared class, both under &#8220;at rest&#8221; conditions (plant shut down, no operators) and under &#8220;operational&#8221; conditions (plant in production, with operators).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b007745 e-con-full e-flex e-con e-child\" data-id=\"b007745\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-25ff5b3 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-image\" data-id=\"25ff5b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/classificazione-della-pulizia-aria.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"ISO 14644-1: Air Cleanliness Classification\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzE4OTcsInVybCI6Imh0dHBzOlwvXC93d3cuZGVsdGEtMjAwMC5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjZcLzA3XC9jbGFzc2lmaWNhemlvbmUtZGVsbGEtcHVsaXppYS1hcmlhLmpwZyJ9\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"436\" src=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/classificazione-della-pulizia-aria.jpg\" class=\"attachment-full size-full wp-image-31897\" alt=\"\" srcset=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/classificazione-della-pulizia-aria.jpg 1000w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/classificazione-della-pulizia-aria-300x131.jpg 300w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/classificazione-della-pulizia-aria-768x335.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4c547e elementor-widget elementor-widget-text-editor\" data-id=\"e4c547e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<em>Click on the table to enlarge it<\/em> \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d8068c4 elementor-widget elementor-widget-text-editor\" data-id=\"d8068c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<strong>Note<\/strong>: <em>The particle limits in the table refer to particles \u22650.5 \u00b5m per cubic meter of air. The standard also specifies limits for other particle sizes (0.1 \u00b5m, 0.2 \u00b5m, 1 \u00b5m, 5 \u00b5m). For complete details, refer to Table 1 of ISO 14644-1:2015.<\/em> \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f0f926 elementor-widget elementor-widget-text-editor\" data-id=\"2f0f926\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>REGULATORY REQUIREMENT<\/strong>: The ISO classification is not permanent; it must be verified periodically in accordance with ISO 14644-2. For an ISO Class 7 environment, the minimum verification frequency is every six months under \u201cat rest\u201d conditions. For more stringent classes (ISO Class 4 and above), the frequency may be higher, depending on the environment\u2019s risk profile.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ce0528e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"ce0528e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b590d6b elementor-widget elementor-widget-heading\" data-id=\"b590d6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3. Operational Phases: Design, Monitoring, and Testing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a8a24d elementor-widget elementor-widget-heading\" data-id=\"6a8a24d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ISO 14644-4: Designing Correctly from the Start<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-410f877 elementor-widget elementor-widget-text-editor\" data-id=\"410f877\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Part 4 of the standard\u2014updated in 2022\u2014is of greatest interest to those who need to design or renovate a cleanroom.<\/p><p>It provides <strong>guidelines for selecting the ISO class<\/strong> based on the production process, for choosing construction materials (walls, floors, suspended ceilings, doors), for sizing the HVAC system, and for managing the flow of personnel and materials.<\/p><p>A key element of <strong>ISO 14644-4<\/strong> is the concept of <strong>design qualification<\/strong> (DQ): before construction begins, it must be documented that the design is consistent with the functional requirements of the environment.<\/p><p>This approach\u2014borrowed from the pharmaceutical industry and increasingly adopted across all sectors\u2014makes it possible to identify critical issues early on, reducing the risk of costly corrective actions after installation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a299688 elementor-widget elementor-widget-image\" data-id=\"a299688\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"700\" src=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/linee-guida-per-la-selezione-della-classe-ISO.webp\" class=\"attachment-full size-full wp-image-31898\" alt=\"\" srcset=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/linee-guida-per-la-selezione-della-classe-ISO.webp 1200w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/linee-guida-per-la-selezione-della-classe-ISO-300x175.webp 300w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/linee-guida-per-la-selezione-della-classe-ISO-1024x597.webp 1024w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/linee-guida-per-la-selezione-della-classe-ISO-768x448.webp 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f8e747 elementor-widget elementor-widget-heading\" data-id=\"7f8e747\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ISO 14644-3: Performance Verification Tests<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3dcea5 elementor-widget elementor-widget-text-editor\" data-id=\"d3dcea5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Part 3 of the standard defines the methods for verifying that the cleanroom meets the stated specifications.<\/p><p>The <strong>main tests<\/strong> include: measurement of particle concentration (for <strong>ISO classification<\/strong>), <strong>HEPA\/ULPA<\/strong> filter leak and integrity testing (DOP\/PAO tests), measurement of airflow velocity and distribution, verification of the differential pressure between adjacent zones, and the recovery test, which measures the rate at which the chamber returns to its nominal class after a disturbance.<\/p><p>These tests must be performed by qualified personnel using calibrated equipment, and the results must be documented in a traceable manner.<\/p><p><strong>Delta 2000<\/strong> assists its customers in organizing and documenting these qualification activities.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-deaeb12 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"deaeb12\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-748f5b8 elementor-widget elementor-widget-heading\" data-id=\"748f5b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">4. ISO 14644 by Sector: How It Applies in Different Industrial Contexts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25ed78f elementor-widget elementor-widget-text-editor\" data-id=\"25ed78f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>One of the most important\u2014and often underestimated\u2014aspects is that the <strong>ISO 14644<\/strong> standard does not specify which ISO class to adopt for each type of production: this is the responsibility of specific industry regulations (GMP, FDA, ISO 13485, HACCP, etc.) or the client itself, based on a risk analysis.<\/p><p><strong>ISO 14644<\/strong> specifies how <strong>to measure and maintain air cleanliness<\/strong>; industry standards define the required levels. Delta 2000 operates in seven major sectors. <\/p><p>The following table summarizes the ISO classes typically used in each case, the relevant standards, and the most suitable product lines:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-03628f5 e-con-full e-flex e-con e-child\" data-id=\"03628f5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e114b41 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-image\" data-id=\"e114b41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/come-si-applica-nei-diversi-contesti-industriali.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"ISO 14644 by Industry: How It Applies in Different Industrial Contexts\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzE4OTksInVybCI6Imh0dHBzOlwvXC93d3cuZGVsdGEtMjAwMC5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjZcLzA3XC9jb21lLXNpLWFwcGxpY2EtbmVpLWRpdmVyc2ktY29udGVzdGktaW5kdXN0cmlhbGkuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"542\" src=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/come-si-applica-nei-diversi-contesti-industriali.jpg\" class=\"attachment-full size-full wp-image-31899\" alt=\"\" srcset=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/come-si-applica-nei-diversi-contesti-industriali.jpg 1000w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/come-si-applica-nei-diversi-contesti-industriali-300x163.jpg 300w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/come-si-applica-nei-diversi-contesti-industriali-768x416.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4960c17 elementor-widget elementor-widget-text-editor\" data-id=\"4960c17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<em>Click on the table to enlarge it<\/em> \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ffcaec elementor-widget elementor-widget-heading\" data-id=\"8ffcaec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Pharmaceutical and Biotechnology<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3238ea6 elementor-widget elementor-widget-text-editor\" data-id=\"3238ea6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This is the sector in which the regulations are the most stringent and detailed.<\/p><p>The primary reference is<strong>EU GMP Annex 1<\/strong> (2022 revision), which correlates <strong>GMP<\/strong> grades (A, B, C, D) with <strong>ISO<\/strong> classes and introduces the <strong>Contamination Control Strategy<\/strong> (CCS).<\/p><p><strong>Pharmaceutical cleanrooms<\/strong> typically require <strong>ISO<\/strong> Class <strong>4\u20138<\/strong>, with aseptic filling processes performed in Class A (ISO 4\u20135) environments within isolators or RABS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e70dbe elementor-widget elementor-widget-heading\" data-id=\"3e70dbe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Chemist\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea289d3 elementor-widget elementor-widget-text-editor\" data-id=\"ea289d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In the chemical industry, cleanrooms are required for the production of high-purity substances, laboratory reagents, and chemical (non-biological) active ingredients.<\/p><p>The typical classes are <strong>ISO 6\u20138<\/strong>.<\/p><p>Where flammable or explosive substances are present, the design must also comply with <strong>ATEX regulations<\/strong>, which impose specific requirements on materials, electrical installations, and ventilation systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-08e9581 elementor-widget elementor-widget-heading\" data-id=\"08e9581\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Medical<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65b906a elementor-widget elementor-widget-text-editor\" data-id=\"65b906a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The manufacture of medical devices\u2014particularly Class II and III devices according to the European MDR classification\u2014requires controlled environments certified to <strong>ISO 13485<\/strong> and, for sterile devices, compliant with <strong>GMP<\/strong> requirements.<\/p><p>The most common ISO classes are <strong>ISO 5\u20137<\/strong>. The critical aspect in this sector is document traceability, which must cover the entire product lifecycle. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f82eed1 elementor-widget elementor-widget-heading\" data-id=\"f82eed1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Electronics and Microelectronics<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-461b7d9 elementor-widget elementor-widget-text-editor\" data-id=\"461b7d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This is the sector that historically gave rise to the very concept of a cleanroom.<\/p><p>Particle contamination compromises the photolithography, deposition, and etching processes used in the manufacture of integrated circuits.<\/p><p>The required cleanliness classes are among the most stringent: <strong>ISO 3\u20136<\/strong>, with process areas that can reach <strong>ISO 1<\/strong>.<\/p><p>In addition to particle concentration, electrostatic discharge (ESD) control is essential in this sector, which requires conductive or antistatic flooring\u2014such as DeltaFLOOR\u2122 solutions\u2014and certified construction materials.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7470dbc elementor-widget elementor-widget-heading\" data-id=\"7470dbc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Food<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-24a2613 elementor-widget elementor-widget-text-editor\" data-id=\"24a2613\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In the food industry, cleanrooms\u2014often referred to as high-hygiene environments (HHE)\u2014are required for the production of foods that are particularly susceptible to microbiological contamination: ready-to-eat products, powdered milk, and dietary supplements.<\/p><p>Typical classes are<strong> ISO 7\u20138<\/strong>. The primary regulatory reference is the <strong>HACCP system<\/strong> (mandatory in Europe) and, for the North American market, <strong>FDA 21 CFR Part 117<\/strong> (FSMA). <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6cb7a30 elementor-widget elementor-widget-heading\" data-id=\"6cb7a30\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Cosmetic<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71ca276 elementor-widget elementor-widget-text-editor\" data-id=\"71ca276\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>European Regulation 1223\/2009<\/strong> on cosmetic products sets quality and safety standards that, for many product categories (sterile cosmetics, products for children, and products for ophthalmic use), require controlled-contamination environments classified as<strong> ISO 7\u20138<\/strong>.<\/p><p>The most critical aspect in this sector is the chemical compatibility of construction materials with the solvents and active ingredients used in the manufacturing process.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a84c89b elementor-widget elementor-widget-heading\" data-id=\"a84c89b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Architectural<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b407cd elementor-widget elementor-widget-text-editor\" data-id=\"7b407cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The architectural sector is a growing field of application, where <strong>Delta 2000 modular solutions<\/strong> are used to create technical environments within existing buildings: operating rooms, analytical laboratories, climate-controlled archives, server rooms, and exhibition spaces with controlled environmental requirements.<\/p><p>In these contexts, the flexibility and aesthetics of the <strong>DeltaWALL\u2122<\/strong> and <strong>DeltaCEILING\u2122<\/strong> modular systems represent a significant competitive advantage.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2660725 elementor-widget elementor-widget-image\" data-id=\"2660725\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"700\" src=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/ISO-14644-come-si-applica-nei-diversi-contesti-industriali.webp\" class=\"attachment-full size-full wp-image-31900\" alt=\"\" srcset=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/ISO-14644-come-si-applica-nei-diversi-contesti-industriali.webp 1200w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/ISO-14644-come-si-applica-nei-diversi-contesti-industriali-300x175.webp 300w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/ISO-14644-come-si-applica-nei-diversi-contesti-industriali-1024x597.webp 1024w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/ISO-14644-come-si-applica-nei-diversi-contesti-industriali-768x448.webp 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cdd1c7a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"cdd1c7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8748f29 elementor-widget elementor-widget-heading\" data-id=\"8748f29\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">5. ISO 14644 and the FDA: An International Comparison<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3233d5a elementor-widget elementor-widget-text-editor\" data-id=\"3233d5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In the United States and Canada, the FDA (Food and Drug Administration) is the primary regulatory authority for cleanrooms in the pharmaceutical and food industries.<\/p><p>Although <strong>FDA<\/strong> and <strong>ISO 14644<\/strong> <strong>regulations<\/strong> share the same fundamental objectives\u2014ensuring product quality through control of the manufacturing environment\u2014there are significant differences in their approach and terminology.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da7a39f elementor-widget elementor-widget-heading\" data-id=\"da7a39f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">FDA 21 CFR Part 211: Current Good Manufacturing Practice (cGMP)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3751e50 elementor-widget elementor-widget-text-editor\" data-id=\"3751e50\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>21 CFR Part 211<\/strong> is the <strong>FDA&#8217;s<\/strong> primary reference for pharmaceutical manufacturing.<\/p><p>It does not define specific cleanliness classes, such as those in <strong>ISO 14644<\/strong>, but requires manufacturers to demonstrate that production areas are appropriate for the type of drug being manufactured and do not compromise its quality, safety, and efficacy.<\/p><p>Companies that export pharmaceuticals to the U.S. must comply with both FDA regulations and European GMP standards\u2014a requirement that <strong>Delta 2000<\/strong> is well acquainted with, having built facilities for clients operating in both markets.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-975cd7d elementor-widget elementor-widget-heading\" data-id=\"975cd7d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">FDA 21 CFR Part 117: Food Safety Modernization Act (FSMA)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d0c8a6 elementor-widget elementor-widget-text-editor\" data-id=\"5d0c8a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>For the food industry, the relevant FDA regulation is 21 CFR Part 117, introduced by the <strong>Food Safety Modernization Act<\/strong> (FSMA) of 2011.<\/p><p>In this case as well, the standard does not specify particular ISO classes, but requires a documented hazard analysis and the implementation of preventive controls\u2014including environmental controls\u2014to ensure the safety of the food products.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22284f0 elementor-widget elementor-widget-text-editor\" data-id=\"22284f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>DELTA 2000 &#038; INTERNATIONAL MARKETS<\/strong>: Delta 2000 has been operating in North American markets for years, with installations in the United States and Canada for clients in the pharmaceutical and food industries. Firsthand knowledge of FDA regulations, combined with compliance with ISO and EU GMP requirements, enables Delta 2000 to support international customers with certified and documented solutions for both regulatory frameworks. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e1646fa elementor-widget elementor-widget-heading\" data-id=\"e1646fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">FS 209E: The Historic U.S. Standard<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4103613 elementor-widget elementor-widget-text-editor\" data-id=\"4103613\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Before the universal adoption of <strong>ISO 14644<\/strong>, the standard for classifying <strong>cleanrooms<\/strong> in the U.S. was <strong>Federal Standard 209E<\/strong> (FS 209E), which classified environments into classes ranging from 1 to 100,000 based on the number of particles \u22650.5 \u00b5m per cubic foot of air.<\/p><p>Although officially withdrawn in 2001, the FS 209E is still mentioned in some American contracts and technical specifications.<\/p><p>The conversion table between FS 209E classes and ISO 14644 classes is as follows:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fb0e995 e-con-full e-flex e-con e-child\" data-id=\"fb0e995\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b440190 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-image\" data-id=\"b440190\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/confronto-internazionale.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"FS 209E: The Historic U.S. Standard\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzE5MDEsInVybCI6Imh0dHBzOlwvXC93d3cuZGVsdGEtMjAwMC5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjZcLzA3XC9jb25mcm9udG8taW50ZXJuYXppb25hbGUuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"330\" src=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/confronto-internazionale.jpg\" class=\"attachment-full size-full wp-image-31901\" alt=\"\" srcset=\"https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/confronto-internazionale.jpg 1000w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/confronto-internazionale-300x99.jpg 300w, https:\/\/www.delta-2000.com\/wp-content\/uploads\/2026\/07\/confronto-internazionale-768x253.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b5ab38 elementor-widget elementor-widget-text-editor\" data-id=\"2b5ab38\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<em>Click on the table to enlarge it<\/em> \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8c7454 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"f8c7454\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-01dd4f0 elementor-widget elementor-widget-heading\" data-id=\"01dd4f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">6. Delta 2000: International Experience in Support of Regulatory Compliance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0d7dba3 elementor-widget elementor-widget-text-editor\" data-id=\"0d7dba3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>With over twenty years of experience and installations in Italy, Europe, the United States, Canada, and South America, <strong>Delta 2000<\/strong> has developed <strong>regulatory expertise<\/strong> that goes far beyond a theoretical understanding of standards.<\/p><p>Each project is tackled using a structured approach that begins with an analysis of the applicable regulatory requirements\u2014 <strong>ISO 14644<\/strong>, <strong>EU GMP<\/strong>, <strong>FDA<\/strong>, <strong>ISO<\/strong> <strong>13485<\/strong>, <strong>HACCP<\/strong> \u2014and culminates in the selection of the most appropriate technical solutions.<\/p><p>The Delta 2000 modular system \u2014 <strong>DeltaWALL\u2122<\/strong>, <strong>DeltaCEILING\u2122<\/strong>, <strong>DeltaDOORS\u2122<\/strong>, <strong>DeltaWINDOWS\u2122<\/strong>, <strong>DeltaFLOOR\u2122<\/strong>, <strong>DeltaFURNITURES\u2122<\/strong>, <strong>DeltaPROFILE\u2122<\/strong>, and <strong>DeltaPASSBOX\u2122<\/strong> \u2014 is designed to meet the requirements of any ISO class and to be qualified according to the IQ\/OQ\/PQ protocols required by pharmaceutical regulations.<\/p><p>The technical documentation provided with each installation is structured to directly support audit and inspection activities conducted by regulatory authorities.<\/p><p>Whether the project is in Italy or the U.S., at a pharmaceutical plant or a food processing facility, Delta 2000 guarantees the same build quality and regulatory compliance\u2014with the support of a multilingual technical team and a well-established network of international partners.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c7c8f2 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2c7c8f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-daa68c0 elementor-widget elementor-widget-heading\" data-id=\"daa68c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Conclusions<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dbad3a5 elementor-widget elementor-widget-text-editor\" data-id=\"dbad3a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>ISO 14644 standard<\/strong> is the <strong>global<\/strong> common language for cleanrooms.<\/p><p>Gaining a deep understanding of it\u2014its various components, its applications across different sectors, and its relationship with national regulations such as those <strong>of the FDA<\/strong> \u2014is the first step toward designing controlled-contamination environments that are truly compliant, efficient, and durable.<\/p><p>In the upcoming articles in this series, <strong>Delta 2000<\/strong> will explore specific topics in greater depth: doors and passboxes for cleanrooms, solutions for the medical sector, a comparison between modular systems and traditional construction, and much more.<\/p><p>Follow us to stay up to date.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-18e75fe elementor-widget elementor-widget-text-editor\" data-id=\"18e75fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><span style=\"font-weight: 400;\"><b>Are you planning to build a cleanroom? Talk to our experts. <\/b><\/span><\/h3><p><span style=\"font-weight: 400;\">Delta 2000 supports companies at every stage of the project: from defining the ISO class to selecting the most suitable modular solutions, through to qualification and post-installation support. We operate in Italy, Europe, the U.S., Canada, and South America. <\/span><\/p><p><span style=\"font-weight: 400;\"><strong>Contact a Delta 2000 consultant<\/strong> \u2192 www.delta-2000.com | <span style=\"text-decoration: underline;\"><strong><a href=\"mailto:info@delta-2000.com\" target=\"_blank\" rel=\"noopener\">info@delta-2000.com<\/a><\/strong><\/span> | <span style=\"text-decoration: underline;\"><strong><a href=\"tel:+39029501688\" target=\"_blank\" rel=\"noopener\">+39 02 9501688<\/a><\/strong><\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>In this article, Delta 2000 provides a comprehensive, sector-by-sector overview of the ISO 14644 standard: what it requires, how it is applied in various industrial sectors, and how it relates to the main national and international reference standards.<\/p>\n","protected":false},"author":10,"featured_media":31902,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[15],"tags":[],"class_list":["post-31915","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ISO 14644: International Standard for Cleanrooms<\/title>\n<meta name=\"description\" content=\"When it comes to cleanrooms, the ISO 14644 standard is the definitive international benchmark.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.delta-2000.com\/en\/iso-14644-what-the-international-standard-says-about-cleanrooms\/\" \/>\n<meta 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