{"id":548,"date":"2026-02-17T14:17:01","date_gmt":"2026-02-17T13:17:01","guid":{"rendered":"https:\/\/relaunch.k-labor.wp4.visual4.com\/?page_id=548"},"modified":"2026-05-07T11:02:49","modified_gmt":"2026-05-07T09:02:49","slug":"resistance-to-chemicals","status":"publish","type":"page","link":"https:\/\/dekra.k-labor.de\/en\/resistance-to-chemicals\/","title":{"rendered":"Resistance to chemicals"},"content":{"rendered":"\n<p><strong>Chemical resistance testing in accordance with DIN EN ISO 2812 and OEM specifications<\/strong><\/p>\n\n\n\n<p>The resistance of materials to chemicals is decisive for their suitability in demanding areas of application \u2013 whether in vehicle interiors, mechanical engineering or packaging with media contact. DEKRA tests plastics, paints, seals, films, textiles and coatings for their resistance to media under realistic conditions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Typical test media:<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Acids <\/strong>(e.g. hydrochloric acid, citric acid)<\/li>\n\n\n\n<li><strong>Bases and alkaline cleaning agents<\/strong><\/li>\n\n\n\n<li><strong>Ethanol, isopropanol and other alcohols<\/strong><\/li>\n\n\n\n<li><strong>Fuels and fuels <\/strong>(e.g. diesel, AdBlue, brake fluid, windshield cleaner)<\/li>\n\n\n\n<li><strong>Cosmetics, sunscreens, skin care products<\/strong><\/li>\n\n\n\n<li><strong>Industrial cleaning agents and disinfectants<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Test method for chemical resistance:<\/h2>\n\n\n\n<p>Our tests are carried out in accordance with <strong>DIN EN ISO 2812<\/strong> (parts 1-4) and customer-specific specifications of the automotive and packaging industry.<\/p>\n\n\n\n<p>Among other things, we offer<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Drop tests:<\/strong> defined quantities of test media are applied to the surface and evaluated on a time-controlled basis<\/li>\n\n\n\n<li><strong>Full immersion:<\/strong> complete immersion tests of test specimens in the medium at defined temperatures and times<\/li>\n\n\n\n<li><strong>Immersion with absorbent media (e.g. filter paper, cotton fleece):<\/strong> simulates longer exposure times or residual exposure under real pressure<\/li>\n\n\n\n<li><strong>Tests under mechanical preload<\/strong> (stress crack tests) to evaluate crack formation in accordance with DIN EN ISO 22088<\/li>\n\n\n\n<li><strong>Conditioning before and after the test:<\/strong> e.g. storage at 23 \u00b0C \/ 50 % rH, climate chamber, heating cabinet<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Evaluation criteria:<\/h2>\n\n\n\n<p>After exposure to the test media, changes such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Color change, loss of gloss, swelling, blistering, cracking or flaking<\/strong><\/li>\n\n\n\n<li><strong>Loss of mechanical properties <\/strong>(e.g. breaking strength, elasticity)<\/li>\n\n\n\n<li><strong>Change in mass or dimensions<\/strong><\/li>\n<\/ul>\n\n\n\n<p>are documented and evaluated according to standard specifications or customer specifications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Fields of application:<\/h2>\n\n\n\n<p>Our chemical resistance tests are used in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Automotive <\/strong>(interior parts, engine components, housings, hoses)<\/li>\n\n\n\n<li><strong>Medical and laboratory technology<\/strong><\/li>\n\n\n\n<li><strong>Packaging with food or chemical contact<\/strong><\/li>\n\n\n\n<li><strong>Household appliances, electronics, coatings and surfaces<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>You can rely on our experience in chemical resistance testing.<\/strong><\/p>\n\n\n\n<p>We support you with material comparisons, release tests and damage analyses \u2013 quickly, in accordance with standards and with reliable documentation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-1&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-1-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-1\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\"><strong>What is the ideal sample shape?<\/strong><\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-1\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-1-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Plate-shaped samples 50 \u00d7 50 mm or tensile bars \u2013 at least 3 samples per medium and evaluation time. Original components are possible if a reference area remains unexposed.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-2&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-2-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-2\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\"><strong>How long does a chemical test take?<\/strong><\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-2\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-2-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Standard times 24 h \/ 168 h \/ 672 h (28 days). Depending on the programme 2 days to 6 weeks; for long-term resistance, up to 12 weeks.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-3&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-3-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-3\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\"><strong>Where do I send the samples?<\/strong><\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-3\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-3-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Dekra Automobil GmbH, Unidekstra\u00dfe 5, 75015 Bretten. Please enclose the sample accompanying form (download area) as well as safety data sheets of the test media.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-4&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-4-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-4\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\"><strong>Are the tests accredited?<\/strong><\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-4\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-4-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Yes, ISO 175, ISO 22088 and a large number of customer-specific lists (e.g. disinfectant tests) are DAkkS-accredited.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-5&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-5-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-5\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\"><strong>May we publicly communicate the resistance?<\/strong><\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-5\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-5-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Yes, with mention of the medium, concentration, exposure time and assessment criterion. Blanket statements should be avoided.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-6&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-6-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-6\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\"><strong>What assessment criteria apply?<\/strong><\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-6\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-6-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p>Change in mass, change in dimensions, visual assessment (swelling, discolouration, cracking) as well as residual mechanical values (tensile strength, elongation at break).<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Chemical resistance testing in accordance with DIN EN ISO 2812 and OEM specifications The resistance of materials to chemicals is decisive for their suitability in demanding areas of application \u2013 whether in vehicle interiors, mechanical engineering or packaging with media contact. DEKRA tests plastics, paints, seals, films, textiles and coatings for their resistance to media [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1260,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-548","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Resistance to chemicals - k-labor<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dekra.k-labor.de\/bestaendigkeit-gegenueber-chemikalien\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Resistance to chemicals - k-labor\" \/>\n<meta property=\"og:description\" content=\"Chemical resistance testing in accordance with DIN EN ISO 2812 and OEM specifications The resistance of materials to chemicals is decisive for their suitability in demanding areas of application \u2013 whether in vehicle interiors, mechanical engineering or packaging with media contact. 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