{"id":17,"date":"2026-10-12T11:01:54","date_gmt":"2026-10-12T11:01:54","guid":{"rendered":"https:\/\/fgvhp.com\/vhp-knowledge\/vhp-material-compatibility\/"},"modified":"2026-10-13T03:42:58","modified_gmt":"2026-10-13T03:42:58","slug":"vhp-material-compatibility","status":"publish","type":"post","link":"https:\/\/fgvhp.com\/es\/vhp-knowledge\/vhp-material-compatibility\/","title":{"rendered":"Compatibilidad de materiales con VHP: qu\u00e9 puede entrar en un ciclo de per\u00f3xido de hidr\u00f3geno"},"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>Materials<\/span><\/div>\n  <span class=\"mono eyebrow\">Materials<\/span>\n  <h1>VHP Material Compatibility: What Can Go Into a Hydrogen Peroxide Cycle<\/h1>\n  <p class=\"lead\">Two different things can go wrong when a material meets hydrogen peroxide vapour: the material can be damaged, or it can quietly absorb the vapour and undermine the cycle. This guide covers both, with a practical material table and how to confirm compatibility for your own load.<\/p>\n  <div class=\"ameta\"><span>Fenggu VHP engineering team<\/span><span>4 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>Compatibility has two sides: damage to the material, and the material&#8217;s effect on the cycle (absorption, decomposition, off-gassing).<\/li><li>Cellulose (paper, cardboard, cotton, wood) and liquids are the usual problem loads \u2014 remove or replace them.<\/li><li>316L stainless steel, glass, PTFE, PVDF, PP and PE are the safe reference materials; elastomers and some plastics need checking.<\/li><li>Confirm with coupon exposure over a realistic number of cycles, and include absorbent materials in the cycle-development load.<\/li><\/ul><\/div>\n  \n  <h2>Why compatibility is a two-sided question<\/h2>\n<p>Vaporized hydrogen peroxide (VHP) is a strong oxidiser, but it is used at low concentrations \u2014 typically a few hundred ppm \u2014 and, in a well-run cycle, without condensation. That is why it is regarded as one of the gentler sporicidal processes for rooms, isolators and equipment. &#8220;Gentle&#8221; does not mean every material is suitable, and the question has two sides that are easy to confuse.<\/p>\n<ul>\n  <li><strong>Does the vapour damage the material?<\/strong> Oxidation, tarnishing, corrosion, embrittlement, cracking or discolouration \u2014 usually cumulative over many cycles rather than visible after one.<\/li>\n  <li><strong>Does the material damage the cycle?<\/strong> Some materials absorb hydrogen peroxide or catalytically break it down. The concentration in the space drops, surfaces near the material may not reach the required dose, and whatever was absorbed is released again during aeration, often for hours.<\/li>\n<\/ul>\n<p>The second effect is the one that surprises people. A room full of cardboard boxes can survive a VHP cycle without any visible change, yet the cycle fails its biological indicators and takes far longer to aerate.<\/p>\n\n<figure>\n<svg viewBox=\"0 0 760 290\" role=\"img\" aria-label=\"Two effects of material on a VHP cycle: surface damage and vapour absorption with off-gassing\" font-family=\"IBM Plex Sans, Arial, sans-serif\">\n  <rect x=\"10\" y=\"10\" width=\"360\" height=\"270\" rx=\"12\" fill=\"#F5F8FB\" stroke=\"#DCE3EC\"\/>\n  <rect x=\"390\" y=\"10\" width=\"360\" height=\"270\" rx=\"12\" fill=\"#F5F8FB\" stroke=\"#DCE3EC\"\/>\n  <text x=\"30\" y=\"42\" font-size=\"15\" font-weight=\"700\" fill=\"#0E1A2B\">1 \u00b7 Vapour acts on the material<\/text>\n  <text x=\"30\" y=\"62\" font-size=\"12\" fill=\"#5A6B82\">Cumulative over many cycles<\/text>\n  <rect x=\"60\" y=\"170\" width=\"260\" height=\"40\" rx=\"4\" fill=\"#C9D3DF\"\/>\n  <path d=\"M60 170 h40 l6 -6 l8 6 h30 l5 -5 l7 5 h50 l6 -7 l7 7 h101\" fill=\"none\" stroke=\"#D62B2B\" stroke-width=\"2\"\/>\n  <g fill=\"#0A8F8A\"><circle cx=\"90\" cy=\"110\" r=\"5\"\/><circle cx=\"140\" cy=\"95\" r=\"5\"\/><circle cx=\"200\" cy=\"120\" r=\"5\"\/><circle cx=\"250\" cy=\"100\" r=\"5\"\/><circle cx=\"290\" cy=\"125\" r=\"5\"\/><circle cx=\"120\" cy=\"135\" r=\"5\"\/><circle cx=\"230\" cy=\"140\" r=\"5\"\/><\/g>\n  <text x=\"60\" y=\"235\" font-size=\"12\" fill=\"#2B3A4F\">Oxidation \u00b7 tarnish \u00b7 cracking \u00b7 discolouration<\/text>\n  <text x=\"60\" y=\"255\" font-size=\"12\" fill=\"#5A6B82\">e.g. copper alloys, carbon steel, latex<\/text>\n  <text x=\"410\" y=\"42\" font-size=\"15\" font-weight=\"700\" fill=\"#0E1A2B\">2 \u00b7 Material acts on the cycle<\/text>\n  <text x=\"410\" y=\"62\" font-size=\"12\" fill=\"#5A6B82\">Absorbs vapour, releases it later<\/text>\n  <rect x=\"440\" y=\"160\" width=\"120\" height=\"50\" rx=\"4\" fill=\"#D9C3A0\"\/>\n  <text x=\"500\" y=\"190\" font-size=\"12\" text-anchor=\"middle\" fill=\"#5B4A1F\">cellulose<\/text>\n  <g fill=\"#0A8F8A\"><circle cx=\"470\" cy=\"100\" r=\"5\"\/><circle cx=\"510\" cy=\"125\" r=\"5\"\/><circle cx=\"540\" cy=\"105\" r=\"5\"\/><\/g>\n  <path d=\"M470 108 L480 155 M510 133 L505 155 M540 113 L530 155\" stroke=\"#0A8F8A\" stroke-width=\"1.5\" marker-end=\"url(#ar)\"\/>\n  <path d=\"M600 200 C620 150 640 150 660 120\" fill=\"none\" stroke=\"#D62B2B\" stroke-width=\"1.6\" stroke-dasharray=\"4 3\" marker-end=\"url(#ar2)\"\/>\n  <text x=\"600\" y=\"225\" font-size=\"12\" fill=\"#2B3A4F\">Lower concentration<\/text>\n  <text x=\"600\" y=\"243\" font-size=\"12\" fill=\"#2B3A4F\">near the load, then<\/text>\n  <text x=\"600\" y=\"261\" font-size=\"12\" fill=\"#2B3A4F\">off-gassing in aeration<\/text>\n  <defs>\n    <marker id=\"ar\" viewBox=\"0 0 10 10\" refX=\"8\" refY=\"5\" markerWidth=\"6\" markerHeight=\"6\" orient=\"auto\"><path d=\"M0 0 L10 5 L0 10z\" fill=\"#0A8F8A\"\/><\/marker>\n    <marker id=\"ar2\" viewBox=\"0 0 10 10\" refX=\"8\" refY=\"5\" markerWidth=\"6\" markerHeight=\"6\" orient=\"auto\"><path d=\"M0 0 L10 5 L0 10z\" fill=\"#D62B2B\"\/><\/marker>\n  <\/defs>\n<\/svg>\n<figcaption>The two compatibility questions. A material can pass the first and still fail the second.<\/figcaption>\n<\/figure>\n\n<h2>Material guide<\/h2>\n<p>The table below is general guidance drawn from common industry experience. Behaviour depends on concentration, exposure time, temperature, the number of cycles and the specific grade or formulation, so treat it as a starting point for your own assessment, not a substitute for testing.<\/p>\n<div class=\"tbl\"><table>\n<thead><tr><th>Material<\/th><th>Typical behaviour with VHP<\/th><th>Practical guidance<\/th><\/tr><\/thead>\n<tbody>\n<tr><th>Stainless steel 304 \/ 316L<\/th><td>Highly resistant; the reference material for VHP-exposed surfaces.<\/td><td>Preferred for chambers, isolators and fixtures. Smooth or electropolished finishes also aerate faster.<\/td><\/tr>\n<tr><th>Glass<\/th><td>Resistant.<\/td><td>Suitable. Make sure surfaces are dry before the cycle.<\/td><\/tr>\n<tr><th>Anodised aluminium<\/th><td>Generally resistant.<\/td><td>Usually acceptable; confirm for bare or machined aluminium exposed to frequent cycles.<\/td><\/tr>\n<tr><th>Copper, brass, bronze<\/th><td>Tarnish over repeated cycles and catalyse H\u2082O\u2082 breakdown.<\/td><td>Limit exposed area; plate, coat or cover where practical; test critical parts.<\/td><\/tr>\n<tr><th>Carbon \/ mild steel<\/th><td>Corrodes when unprotected.<\/td><td>Avoid bare surfaces; use coated or stainless alternatives.<\/td><\/tr>\n<tr><th>PTFE, PVDF, PP, PE (HDPE), PEEK<\/th><td>Good resistance.<\/td><td>Suitable for tubing, seals, trays and wrapping.<\/td><\/tr>\n<tr><th>PVC, polycarbonate, acrylic (PMMA)<\/th><td>Generally usable; some grades can craze or yellow under stress and repeated exposure.<\/td><td>Common in windows and panels; check with the supplier and by coupon testing for high-frequency cycles.<\/td><\/tr>\n<tr><th>Nylon (polyamide), polyurethane<\/th><td>Variable; some grades absorb peroxide or degrade.<\/td><td>Test before use, or replace with a known-resistant polymer.<\/td><\/tr>\n<tr><th>Silicone, EPDM, FKM<\/th><td>Resistant, but silicone in particular absorbs H\u2082O\u2082 and releases it slowly.<\/td><td>Good gasket choices. Large silicone areas lengthen aeration \u2014 account for it in cycle development.<\/td><\/tr>\n<tr><th>Natural rubber, latex<\/th><td>Degrade.<\/td><td>Avoid.<\/td><\/tr>\n<tr><th>Neoprene and CSM gloves and sleeves<\/th><td>Widely used in VHP isolators; absorb peroxide.<\/td><td>Often the slowest item to aerate in an isolator. Use the glove supplier&#8217;s VHP data.<\/td><\/tr>\n<tr><th>Paper, cardboard, cotton, wood<\/th><td>Absorb and decompose vapour (cellulose).<\/td><td>Remove from the space. Use HDPE spunbond or plastic packaging instead of paper.<\/td><\/tr>\n<tr><th>Water and other liquids<\/th><td>Absorb vapour; VHP does not sterilise inside liquids.<\/td><td>Remove or seal. Dry wet surfaces before the cycle.<\/td><\/tr>\n<tr><th>Oils and greases<\/th><td>Can absorb vapour and shield the surface beneath.<\/td><td>Clean off before decontamination; use compatible lubricants.<\/td><\/tr>\n<tr><th>Electronics (enclosed)<\/th><td>Usually tolerate non-condensing VHP cycles well.<\/td><td>Common in rooms and isolators. Exposed connectors and copper tracks can tarnish over time; confirm for critical instruments.<\/td><\/tr>\n<\/tbody><\/table><\/div>\n<p class=\"note\">General guidance only. Grades and formulations differ \u2014 confirm by testing under your cycle conditions.<\/p>\n\n<h2>Surfaces the vapour cannot reach<\/h2>\n<p>VHP is a surface process. It acts on surfaces it can contact, so compatibility planning also means looking at geometry:<\/p>\n<ul>\n  <li><strong>Occluded surfaces<\/strong> \u2014 under labels, inside threads, between stacked items, beneath items resting flat on a bench.<\/li>\n  <li><strong>Closed volumes<\/strong> \u2014 sealed bottles, closed drawers and cabinets, capped tubes.<\/li>\n  <li><strong>Mated surfaces<\/strong> \u2014 tight-fitting lids, clamped joints, overlapping gaskets.<\/li>\n<\/ul>\n<p>Open, separate and raise items so vapour can reach every surface that needs treatment. Anything that has to stay closed during the cycle should be decontaminated in another way.<\/p>\n\n<h2>Condensation changes everything<\/h2>\n<p>Most compatibility problems are made worse by condensation. When vapour condenses, a liquid film of concentrated hydrogen peroxide forms on surfaces \u2014 far more aggressive than the vapour itself, and slower to remove. Cold surfaces, overdosing and poor distribution are the usual causes. A cycle designed to stay below the dew point protects materials as well as making results more reproducible.<\/p>\n\n<h2>How to confirm compatibility for your load<\/h2>\n<ol>\n  <li><strong>List the materials.<\/strong> Every surface that will be exposed: structure, finishes, gaskets, gloves, windows, equipment housings, cables, packaging and anything stored in the space.<\/li>\n  <li><strong>Screen against supplier data.<\/strong> Equipment and component manufacturers often hold VHP compatibility data. Ask for it before buying new fittings.<\/li>\n  <li><strong>Coupon testing.<\/strong> Expose representative coupons or spare parts to a number of cycles that represents the intended service life, then inspect appearance, dimensions, weight, mechanical properties or function as relevant.<\/li>\n  <li><strong>Test the effect on the cycle.<\/strong> Include absorbent materials in the cycle-development load, place biological and chemical indicators near them, and measure aeration time with them present.<\/li>\n  <li><strong>Lock it down.<\/strong> Write the allowed and prohibited materials into the loading procedure, so the validated load stays the load that is actually run.<\/li>\n<\/ol>\n\n<div class=\"callout\"><b>For new projects:<\/b> send the material list with your application review request. It is one of the first things an engineer will ask for, because it affects cycle design, aeration time and validation more than room size does.<\/div>\n  \n  <div class=\"refs\"><p><b>References<\/b><\/p><p>ISO 22441:2022 \u2014 Low temperature vaporized hydrogen peroxide sterilization<\/p><p>USP &lt;1229.11&gt; Vapor Phase Sterilization<\/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\/vhp-pass-box\/\" target=\"_blank\" rel=\"noopener\"><span class=\"mono\">FG-PB-VHP<\/span><h3>VHP pass box<\/h3><p>Decontaminates the outer surfaces of components and sealed containers entering Grade A\/B areas.<\/p><span class=\"go\">View specifications \u2192<\/span><\/a><a class=\"opt\" href=\"https:\/\/fenggu-bio.com\/products\/mobile-vhp-room-sterilizer\/\" target=\"_blank\" rel=\"noopener\"><span class=\"mono\">FG-VHP-M500<\/span><h3>Mobile VHP room sterilizer<\/h3><p>For rooms up to 300 m\u00b3, including rooms with instruments and fixed equipment.<\/p><span class=\"go\">View specifications \u2192<\/span><\/a><a class=\"opt\" href=\"https:\/\/fenggu-bio.com\/products\/recirculating-vhp-generator\/\" target=\"_blank\" rel=\"noopener\"><span class=\"mono\">FG-VHP-GL<\/span><h3>Recirculating VHP generator<\/h3><p>Closed-loop decontamination of biosafety cabinets, centrifuges and enclosed equipment.<\/p><span class=\"go\">View specifications \u2192<\/span><\/a><\/div>\n  <p style=\"margin-top:24px\">Related application guides: <a class=\"go\" href=\"\/applications\/vhp-pass-box-material-transfer\/\">VHP pass box material transfer<\/a> \u00b7 <a class=\"go\" href=\"\/applications\/isolator-rabs-decontamination\/\">Isolator and RABS decontamination<\/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>Can paper and cardboard go through a VHP cycle?<\/summary><p>Generally not. Cellulose absorbs and breaks down hydrogen peroxide vapour, which lowers the concentration near the load and releases peroxide again during aeration. Remove paper and cardboard, or replace them with HDPE spunbond or plastic packaging.<\/p><\/details><details><summary>Is VHP safe for electronic equipment?<\/summary><p>Many enclosed electronic devices tolerate VHP cycles that are run under non-condensing conditions, which is one reason VHP is used in rooms and isolators that contain instruments. Exposed connectors and copper can tarnish over repeated cycles, so confirm compatibility for critical instruments with the manufacturer or by testing.<\/p><\/details><details><summary>Why do isolator gloves slow down aeration?<\/summary><p>Glove and sleeve materials such as neoprene and CSM absorb hydrogen peroxide during the exposure phase and release it slowly afterwards. In many isolators they are the last surfaces to reach the residual limit, so glove material and area are part of cycle development.<\/p><\/details><details><summary>How many cycles should a compatibility test cover?<\/summary><p>Enough to represent the intended service life of the material. Estimate how often the space will be decontaminated and for how many years, and design the test exposure around that number.<\/p><\/details><details><summary>Does VHP sterilise inside liquids or closed containers?<\/summary><p>No. VHP acts on the surfaces it can reach. Liquids and closed containers shield what is inside, and liquids also absorb the vapour, so they should be removed or treated by another method.<\/p><\/details><\/div>\n<\/div><\/section>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Can paper and cardboard go through a VHP cycle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Generally not. Cellulose absorbs and breaks down hydrogen peroxide vapour, which lowers the concentration near the load and releases peroxide again during aeration. 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Liquids and closed containers shield what is inside, and liquids also absorb the vapour, so they should be removed or treated by another method.\"}}]}<\/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><\/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: 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