{"id":232,"date":"2026-07-29T06:59:36","date_gmt":"2026-07-29T06:59:36","guid":{"rendered":"https:\/\/fenggu-bio.com\/vhp-pass-box-vs-dynamic-pass-box\/"},"modified":"2026-08-04T05:29:47","modified_gmt":"2026-08-04T05:29:47","slug":"vhp-pass-box-vs-dynamic-pass-box","status":"publish","type":"post","link":"https:\/\/fenggu-bio.com\/ru\/vhp-pass-box-vs-dynamic-pass-box\/","title":{"rendered":"VHP Pass Box vs Dynamic Pass Box: Which to Choose for Your Cleanroom"},"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\">Equipment Selection<\/span><\/p>\n<h1>VHP Pass Box vs Dynamic Pass Box: Which to Choose for Your Cleanroom<\/h1>\n<div class=\"meta\">By Fenggu Medical Equipment &middot; Pharmaceutical Isolation &amp; Containment<\/div>\n<p class=\"lead\">Both a VHP pass box and a dynamic pass box move materials between cleanroom zones without opening a door to an adjacent area \u2014 but they solve two different problems. One <strong>sterilizes<\/strong> the surface of what passes through; the other only <strong>cleans<\/strong> it of particles. Choosing the wrong one can either leave a contamination risk in place or add cost and cycle time you don&#8217;t need.<\/p>\n<figure>\n<img width=\"675\" height=\"900\" decoding=\"async\" src=\"\/wp-content\/uploads\/site\/cutout-vhppassbox.jpg\" alt=\"Fenggu VHP pass box for sterile material transfer between cleanroom grades\"><figcaption>A VHP pass box uses vaporized hydrogen peroxide to sterilize the surface of transferred items.<\/figcaption><\/figure>\n<h2>What Is a VHP Pass Box?<\/h2>\n<p>A <a href=\"\/ru\/products\/vhp-pass-box\/\">VHP pass box<\/a> is a transfer hatch that runs a <strong>vaporized hydrogen peroxide (VHP)<\/strong> cycle on every load. Items are placed inside, both doors interlock shut, and 30\u201335% H\u2082O\u2082 is flash-vaporized and circulated through the chamber. The oxidizing gas destroys the cell membranes, proteins and nucleic acids of bacteria, fungi, viruses and spores, achieving a <strong>6-log (99.9999%) sporicidal reduction<\/strong>. After the cycle the peroxide breaks down into water vapor and oxygen, leaving no toxic residue.<\/p>\n<p>Because it actually <em>sterilizes<\/em> surfaces, a VHP pass box is used where material must move into an <strong>aseptic or high-containment area<\/strong> \u2014 for items that cannot tolerate the heat or moisture of an autoclave.<\/p>\n<h2>What Is a Dynamic Pass Box?<\/h2>\n<p>A <a href=\"\/ru\/products\/laminar-flow-pass-box\/\">dynamic pass box<\/a> (laminar-flow pass box) is fitted with a HEPA-filtered fan unit that creates a downward laminar airflow, and often an air-shower function. As items sit inside, filtered air sweeps particles off their surfaces before they enter the higher-grade zone. It <strong>removes particulate contamination<\/strong> \u2014 it does <strong>not<\/strong> sterilize. A cycle is fast (an air rinse of tens of seconds), and running cost is low.<\/p>\n<p>Dynamic pass boxes are the workhorse for routine transfers between cleanroom grades where particle control \u2014 not sterility \u2014 is the requirement.<\/p>\n<h2>VHP Pass Box vs Dynamic Pass Box: Key Differences<\/h2>\n<table>\n<thead>\n<tr>\n<th>Criteria<\/th>\n<th>\u042f\u0449\u0438\u043a \u0434\u043b\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043e\u0432 VHP<\/th>\n<th>Dynamic Pass Box<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Decontamination method<\/th>\n<td>Vaporized H\u2082O\u2082 \u2014 chemical sterilization<\/td>\n<td>HEPA-filtered laminar airflow \/ air shower<\/td>\n<\/tr>\n<tr>\n<th>What it achieves<\/th>\n<td>Surface sterilization, 6-log spore kill<\/td>\n<td>Particle removal only (no sterilization)<\/td>\n<\/tr>\n<tr>\n<th>Typical use<\/th>\n<td>Transfer into aseptic \/ BSL \/ high-containment areas<\/td>\n<td>Routine transfer between cleanroom grades<\/td>\n<\/tr>\n<tr>\n<th>Cycle time<\/th>\n<td>Longer (full VHP cycle + aeration)<\/td>\n<td>Fast (seconds of air rinse)<\/td>\n<\/tr>\n<tr>\n<th>Heat \/ moisture on load<\/th>\n<td>Low-temperature, dry process<\/td>\n<td>Ambient, dry<\/td>\n<\/tr>\n<tr>\n<th>Relative cost<\/th>\n<td>Higher<\/td>\n<td>Lower<\/td>\n<\/tr>\n<tr>\n<th>Residue<\/th>\n<td>None (H\u2082O\u2082 \u2192 water + oxygen)<\/td>\n<td>None<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Which One Should You Choose?<\/h2>\n<p><strong>Choose a VHP pass box if<\/strong> materials must enter an aseptic filling suite, a sterility-test isolator, or a BSL-3\/4 laboratory, and their surfaces must be demonstrably sterile before transfer. It is the right tool wherever a validated log reduction \u2014 not just &#8220;cleaner&#8221; \u2014 is required.<\/p>\n<p><strong>Choose a dynamic pass box if<\/strong> you are moving items between graded cleanroom areas where the goal is to control particle carry-over, and full surface sterilization is not needed. It is faster and more economical for high-frequency routine transfers.<\/p>\n<p>Many facilities use <strong>both<\/strong>: dynamic pass boxes for general grade-to-grade transfers, and VHP pass boxes at the critical entry points to aseptic or containment zones. If material also needs a mechanically airtight barrier \u2014 for fumigation-sealed rooms \u2014 an <a href=\"\/ru\/products\/biosafety-airtight-pass-box\/\">airtight biosafety pass box<\/a> may be specified alongside them.<\/p>\n<div class=\"fg-cta\">\n<h3>Need help specifying the right pass box?<\/h3>\n<p>Tell us your transfer scenario \u2014 containment level, throughput and validation requirements \u2014 and our engineers will recommend the right configuration.<\/p>\n<p><a class=\"fg-btn\" href=\"\/ru\/products\/vhp-pass-box\/\">View VHP Pass Box<\/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>Equipment Selection VHP Pass Box vs Dynamic Pass Box: Which to Choose for Your Cleanroom By Fenggu Medical Equipment &middot; [&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-232","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts\/232","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=232"}],"version-history":[{"count":2,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts\/232\/revisions"}],"predecessor-version":[{"id":277,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts\/232\/revisions\/277"}],"wp:attachment":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/media?parent=232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/categories?post=232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/tags?post=232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}