{"id":307,"date":"2026-08-26T02:23:03","date_gmt":"2026-08-26T02:23:03","guid":{"rendered":"https:\/\/fenggu-bio.com\/what-is-vhp-decontamination\/"},"modified":"2026-08-26T02:23:03","modified_gmt":"2026-08-26T02:23:03","slug":"what-is-vhp-decontamination","status":"publish","type":"post","link":"https:\/\/fenggu-bio.com\/ru\/what-is-vhp-decontamination\/","title":{"rendered":"What Is VHP Decontamination and How It Works"},"content":{"rendered":"<style>\n.entry-title,.ast-single-post .entry-header{display:none!important}\n.fg-art{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,\"Helvetica Neue\",Arial,sans-serif;color:#1e2838;line-height:1.72;max-width:820px;margin:0 auto;padding:0 22px;font-size:16.5px}\n.fg-art .fg-eyebrow{display:inline-block;background:#e3ecfa;color:#003AA1;font-weight:700;font-size:12px;letter-spacing:.7px;padding:5px 13px;border-radius:20px;text-transform:uppercase;margin:34px 0 14px}\n.fg-art h1{font-size:33px;line-height:1.2;color:#002B78;margin:0 0 12px;font-weight:800}\n.fg-art .meta{font-size:13.5px;color:#7a8699;margin:0 0 26px;border-bottom:1px solid #e6ebf3;padding-bottom:18px}\n.fg-art h2{font-size:23px;color:#002B78;margin:38px 0 12px;line-height:1.28}\n.fg-art p{margin:0 0 16px}\n.fg-art .lead{font-size:18px;color:#3a4658}\n.fg-art figure{margin:26px 0}\n.fg-art img{width:100%;border-radius:12px;box-shadow:0 6px 22px rgba(0,58,161,.12);display:block}\n.fg-art figcaption{font-size:13px;color:#7a8699;margin-top:9px;text-align:center}\n.fg-art table{border-collapse:collapse;width:100%;margin:22px 0;font-size:14.5px}\n.fg-art th,.fg-art td{border:1px solid #d7dfea;padding:11px 14px;text-align:left;vertical-align:top}\n.fg-art thead th{background:#002B78;color:#fff;font-weight:700}\n.fg-art tbody th{background:#eff4fb;color:#002B78;font-weight:700;width:24%}\n.fg-art tbody tr:nth-child(even) td{background:#f7f9fc}\n.fg-art ul{margin:0 0 16px;padding-left:22px}.fg-art li{margin:7px 0}\n.fg-art .fg-cta{background:linear-gradient(120deg,#002B78,#003AA1);color:#fff;border-radius:14px;padding:30px 28px;margin:38px 0 10px;text-align:center}\n.fg-art .fg-cta h3{color:#fff;font-size:22px;margin:0 0 8px}\n.fg-art .fg-cta p{color:#dce7f7;margin:0 0 18px;font-size:15.5px}\n.fg-art .fg-btn{display:inline-block;background:#EC001B;color:#fff;padding:13px 28px;border-radius:6px;font-weight:600;font-size:15.5px;text-decoration:none;margin:0 6px 8px}\n.fg-art .fg-btn.o{background:transparent;border:2px solid rgba(255,255,255,.7)}\n.fg-art a{color:#003AA1;text-decoration:underline}\n.fg-art .fg-cta a{text-decoration:none;color:#fff}\n@media(max-width:640px){.fg-art h1{font-size:26px}.fg-art th,.fg-art td{padding:9px 10px;font-size:13.5px}.fg-art tbody th{width:34%}}\n<\/style>\n<article class=\"fg-art\">\n<span class=\"fg-eyebrow\">VHP Fundamentals<\/span><\/p>\n<h1>What Is VHP Decontamination and How It Works<\/h1>\n<div class=\"meta\">By Fenggu Medical Equipment &middot; Pharmaceutical Isolation &amp; Containment<\/div>\n<p class=\"lead\">Vaporized hydrogen peroxide (VHP) is a low-temperature, residue-free method for bio-decontaminating cleanrooms, isolators, pass boxes and enclosed equipment. It delivers hydrogen peroxide (H&#8322;O&#8322;) as a true vapor that reaches every exposed surface, inactivates bacteria, fungi, viruses and &mdash; critically &mdash; resistant bacterial spores, then breaks down into water and oxygen. This guide explains what VHP is, how a cycle works, why it can be validated to a 6-log reduction, and where it is used in pharmaceutical manufacturing.<\/p>\n<figure>\n<img width=\"675\" height=\"900\" decoding=\"async\" src=\"\/wp-content\/uploads\/site\/cutout-vhpgenerator.jpg\" alt=\"Fenggu VHP generator that vaporizes hydrogen peroxide for bio-decontamination\"><figcaption>A VHP generator flash-vaporizes hydrogen peroxide solution into a dry, sporicidal vapor.<\/figcaption><\/figure>\n<h2>What is VHP?<\/h2>\n<p>VHP stands for <strong>vaporized hydrogen peroxide<\/strong> &mdash; hydrogen peroxide (typically a 30&ndash;35% aqueous solution) converted into a gas-phase vapor by a VHP generator. Unlike liquid disinfectants or aerosolized &#8220;dry fog&#8221; droplets, a true vapor behaves like a gas: it diffuses to fill a space and contacts every exposed surface, including shadowed areas a spray or wipe would miss. Because H&#8322;O&#8322; decomposes into only water vapor and oxygen, VHP leaves <strong>no toxic residue<\/strong> &mdash; a decisive advantage over agents such as formaldehyde.<\/p>\n<p>&#8220;VHP&#8221; is sometimes used loosely, so it helps to distinguish it from aerosolized hydrogen peroxide (aHP), which disperses fine liquid droplets rather than a vapor. The two differ in penetration and validatability; we compare them in <a href=\"\/ru\/vaporized-vs-aerosolized-hydrogen-peroxide\/\">Vaporized vs Aerosolized Hydrogen Peroxide<\/a>.<\/p>\n<h2>How a VHP decontamination cycle works<\/h2>\n<p>A VHP cycle runs in four automated phases:<\/p>\n<ul>\n<li><strong>1. Dehumidification.<\/strong> The space or chamber is dried to a controlled low humidity so that peroxide vapor stays in the gas phase instead of condensing prematurely.<\/li>\n<li><strong>2. Conditioning.<\/strong> The generator flash-vaporizes H&#8322;O&#8322; solution and raises the peroxide concentration to the target level, saturating the environment.<\/li>\n<li><strong>3. Decontamination.<\/strong> Concentration is held at the sporicidal level (typically a few hundred ppm) for a set exposure time. The oxidizing vapor attacks the lipids, proteins and DNA of micro-organisms, inactivating them on every contacted surface.<\/li>\n<li><strong>4. Aeration.<\/strong> Peroxide is broken down &mdash; by catalytic converters and\/or fresh-air exchange &mdash; until the residual falls to a safe level, typically &le; 1 ppm, so operators can re-enter.<\/li>\n<\/ul>\n<p>Two delivery strategies exist: <strong>pulsed-vacuum<\/strong> systems cycle chamber pressure to drive vapor into hard-to-reach internal geometry, while <strong>recirculating<\/strong> systems use fans and ductwork to circulate vapor through a room or enclosure. See <a href=\"\/ru\/products\/pulsed-vacuum-vhp-generator\/\">pulsed-vacuum<\/a> and <a href=\"\/ru\/products\/recirculating-vhp-generator\/\">recirculating VHP generators<\/a>, or the guide on <a href=\"\/ru\/vhp-generator-portable-vs-integrated\/\">portable vs integrated generators<\/a>.<\/p>\n<h2>Why VHP achieves a 6-log reduction<\/h2>\n<p>The benchmark for sporicidal efficacy is a <strong>6-log&#8321;&#8320; reduction<\/strong> (99.9999%) of a resistant biological indicator &mdash; usually <em>Geobacillus stearothermophilus<\/em> spores. Biological indicators are placed at challenging locations, a cycle is run, and the indicators are incubated to confirm no growth. Because the cycle parameters (concentration, exposure time, temperature, humidity) are measured and repeatable, VHP can be <strong>validated<\/strong> to a defined log reduction under a DQ\/IQ\/OQ\/PQ protocol &mdash; which is why it is accepted for GMP-critical bio-decontamination. Stated efficacy is always established by the project&#8217;s own validation protocol and report.<\/p>\n<h2>Typical VHP parameters<\/h2>\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Typical range<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>\u0421\u0442\u0435\u0440\u0438\u043b\u0438\u0437\u0430\u043d\u0442<\/th>\n<td>30&ndash;35% hydrogen peroxide solution<\/td>\n<\/tr>\n<tr>\n<th>\u0422\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430<\/th>\n<td>25&ndash;35 &deg;C (low-temperature, material-friendly)<\/td>\n<\/tr>\n<tr>\n<th>\u041a\u043e\u043d\u0446\u0435\u043d\u0442\u0440\u0430\u0446\u0438\u044f VHP<\/th>\n<td>~150&ndash;700 ppm, depending on load and method<\/td>\n<\/tr>\n<tr>\n<th>Sporicidal efficacy<\/th>\n<td>&ge; 6-log&#8321;&#8320; (subject to validation)<\/td>\n<\/tr>\n<tr>\n<th>Post-aeration residual<\/th>\n<td>&le; 1 ppm<\/td>\n<\/tr>\n<tr>\n<th>By-products<\/th>\n<td>Water vapor and oxygen &mdash; no toxic residue<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Where VHP is used<\/h2>\n<ul>\n<li><strong>Isolators and RABS<\/strong> &mdash; routine bio-decontamination of <a href=\"\/ru\/products\/sterility-test-isolator\/\">sterility test<\/a> and <a href=\"\/ru\/products\/aseptic-filling-isolator\/\">aseptic filling isolators<\/a> between batches.<\/li>\n<li><strong>Material transfer<\/strong> &mdash; a <a href=\"\/ru\/products\/vhp-pass-box\/\">VHP pass box<\/a> surface-decontaminates items moving between cleanroom grades.<\/li>\n<li><strong>Whole rooms and suites<\/strong> &mdash; a <a href=\"\/ru\/products\/hvac-integrated-vhp-system\/\">HVAC-integrated VHP system<\/a> or a <a href=\"\/ru\/products\/mobile-vhp-room-sterilizer\/\">mobile room sterilizer<\/a> decontaminates entire cleanrooms.<\/li>\n<li><strong>Enclosed equipment<\/strong> &mdash; biosafety cabinets, lyophilizers, centrifuges, fermenters and tunnel ovens, using a portable generator.<\/li>\n<\/ul>\n<h2>VHP vs other decontamination methods<\/h2>\n<table>\n<thead>\n<tr>\n<th>Method<\/th>\n<th>Residue<\/th>\n<th>Temperature<\/th>\n<th>Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>VHP<\/th>\n<td>None (water + O&#8322;)<\/td>\n<td>Low, 25&ndash;35 &deg;C<\/td>\n<td>Validatable, material-friendly, fast aeration<\/td>\n<\/tr>\n<tr>\n<th>Formaldehyde<\/th>\n<td>Toxic residue<\/td>\n<td>Needs heat\/humidity<\/td>\n<td>Being phased out; carcinogen, slow, leaves residue<\/td>\n<\/tr>\n<tr>\n<th>Ethylene oxide (EtO)<\/th>\n<td>Toxic residue<\/td>\n<td>Low<\/td>\n<td>For sealed loads; long aeration, flammable\/toxic<\/td>\n<\/tr>\n<tr>\n<th>Chlorine dioxide<\/th>\n<td>Minimal<\/td>\n<td>Ambient<\/td>\n<td>Gas-phase; corrosion considerations<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"fg-cta\">\n<h3>Planning VHP bio-decontamination for your facility?<\/h3>\n<p>Tell us the room, isolator or equipment you need to decontaminate and your GMP requirements, and our engineers will recommend a validatable VHP configuration.<\/p>\n<p><a class=\"fg-btn\" href=\"\/ru\/products\/hvac-integrated-vhp-system\/\">Explore VHP Systems<\/a><br \/>\n<a class=\"fg-btn o\" href=\"\/ru\/contact\/\">Talk to an Engineer<\/a>\n<\/div>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>VHP Fundamentals What Is VHP Decontamination and How It Works By Fenggu Medical Equipment &middot; Pharmaceutical Isolation &amp; Containment Vaporized [&hellip;]<\/p>\n","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":[1],"tags":[],"class_list":["post-307","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts\/307","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/comments?post=307"}],"version-history":[{"count":0,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts\/307\/revisions"}],"wp:attachment":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/media?parent=307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/categories?post=307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/tags?post=307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}