{"id":5266,"date":"2024-07-30T11:37:53","date_gmt":"2024-07-30T08:07:53","guid":{"rendered":"https:\/\/polymertest.com\/asp_product\/environmental-stress-crack-resistance-testing-machine\/"},"modified":"2025-12-30T09:18:07","modified_gmt":"2025-12-30T05:48:07","slug":"environmental-stress-crack-resistance-tester-escr","status":"publish","type":"asp_product","link":"https:\/\/polymertest.com\/en\/product_en\/environmental-stress-crack-resistance-tester-escr\/","title":{"rendered":"Environmental Stress Crack Resistance Tester (ESCR) &#8211; ASTM D1693"},"content":{"rendered":"<h2>Introduction to ESCR Tester (Environmental Stress Crack Resistance)<\/h2>\n<p>Cracking in detergent bottles, plastic tanks, or cable jackets over time is often caused by a phenomenon known as &#8220;Environmental Stress Cracking.&#8221; The <strong>ESCR Testing Machine<\/strong> manufactured by <strong>Polymer Test<\/strong> simulates these aggressive environmental conditions (elevated temperature + chemical agents) to evaluate the resistance of polymer samples before mass production.<\/p>\n<h3>High-Precision Thermal Bath Features<\/h3>\n<p>The heart of this device is a stainless steel oil bath with exceptional temperature stability:<\/p>\n<ul>\n<li><strong>Temperature Control:<\/strong> Features a high-precision PID controller to stabilize oil temperature (typically 50\u00b0C or 100\u00b0C as per standard) with 0.1\u00b0C accuracy.<\/li>\n<li><strong>Circulation System:<\/strong> Equipped with a powerful stirring motor to ensure complete temperature uniformity throughout the bath.<\/li>\n<li><strong>High Capacity:<\/strong> Includes a stainless steel test tube rack capable of holding <strong>10 Test Tubes<\/strong> simultaneously for parallel testing.<\/li>\n<\/ul>\n<h3>Complete Sample Preparation Package<\/h3>\n<p>Unlike many models on the market, this machine includes all necessary tools to prepare samples according to the &#8220;Bent Strip&#8221; method:<\/p>\n<ul>\n<li><strong>Manual Punch and Die:<\/strong> For cutting precise rectangular specimens (38 \u00d7 13 mm).<\/li>\n<li><strong>Notching Jig:<\/strong> A critical tool for creating a standard, controlled crack\/notch on the sample surface.<\/li>\n<li><strong>Bending Equipment:<\/strong> Includes precision brass channel holders and a special transfer tool to bend the sample and insert it into the tube.<\/li>\n<li><strong>Test Tubes:<\/strong> Heat and chemical-resistant Pyrex tubes (32 \u00d7 200 mm).<\/li>\n<\/ul>\n<h3>Standards and Applications<\/h3>\n<p>This device is designed exactly according to the rigorous requirements of the following standards:<\/p>\n<ul>\n<li>Standard <a href=\"https:\/\/www.astm.org\/d1693-15.html\" target=\"_blank\" rel=\"nofollow noopener\"><strong>ASTM D1693<\/strong><\/a> (Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics).<\/li>\n<li>National Standard <strong>INSO 7175<\/strong>.<\/li>\n<\/ul>\n<p><strong>Raw Material Lab Setup:<\/strong> Alongside this test, checking material viscosity is often essential. We recommend also reviewing the specifications of our <a href=\"https:\/\/polymertest.com\/en\/product_en\/melt-flow-index-tester-mfi\"><strong>Melt Flow Index (MFI) Tester<\/strong><\/a>.<\/p>\n<p>For price inquiries regarding the ESCR machine and accessories, please click the contact for purchase button or visit our <a href=\"https:\/\/polymertest.com\/en\/contact-us\/\"><strong>contact us<\/strong><\/a> page.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The PolymerTest ESCR Tester is designed to determine the susceptibility of ethylene plastics (such as blow-molded bottles and cable jackets) to Environmental Stress Cracking. This complete workstation includes a high-precision PID-controlled oil bath and a full set of sample preparation tools (cutting die, notching jig, and transfer tool) to perform the &#8220;Bent Strip&#8221; test in strict accordance with ASTM D1693.<\/p>\n","protected":false},"featured_media":3301,"template":"","meta":[],"asp_product_taxonomy":[1621,1622],"class_list":["post-5266","asp_product","type-asp_product","status-publish","has-post-thumbnail","hentry","asp_product_taxonomy-laboratory-equipment-for-all-types-of-polymer-pipes-and-fittings-en","asp_product_taxonomy-lab-equipment-materials-polymers"],"_links":{"self":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/asp_product\/5266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/asp_product"}],"about":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/types\/asp_product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/media\/3301"}],"wp:attachment":[{"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/media?parent=5266"}],"wp:term":[{"taxonomy":"asp_product_taxonomy","embeddable":true,"href":"https:\/\/polymertest.com\/en\/wp-json\/wp\/v2\/asp_product_taxonomy?post=5266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}