{"id":2020,"date":"2026-08-20T10:00:00","date_gmt":"2026-08-20T09:00:00","guid":{"rendered":"https:\/\/www.amann.education\/?p=2020"},"modified":"2026-09-08T08:08:37","modified_gmt":"2026-09-08T07:08:37","slug":"fiber-identification-and-the-burn-test","status":"publish","type":"post","link":"https:\/\/www.amann.education\/?p=2020","title":{"rendered":"Fiber Identification and the Burn Test"},"content":{"rendered":"\n<p class=\"is-style-text-subtitle is-style-text-subtitle--1 wp-block-paragraph\">Stage 1 \u2014 Raw material<\/p>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\" open><summary>Burn Test \u2014 <strong>Cotton (CO)<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-1 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A cotton thread is held into the flame. It catches fire immediately and burns away quickly.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cotton does not melt. It burns like paper, smells like burning paper and leaves soft grey ash.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;If it burns to ash, it is a natural fibre. Cotton is soft and easy to sew, but it has less strength than polyester.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-co_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>Polyester (PES)<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-2 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread pulls back from the flame, melts, burns with dark smoke and forms a hard bead at the end.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Polyester melts before it burns. The hard, round, dark bead is its clearest sign.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;Polyester melts. That is why needle heat matters at high speed &#8211; and why it gives you the best mix of strength, UV resistance and price.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-pes_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>Polyamide (PA)<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-3 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread shrinks away, melts and burns with a small bluish flame. A hard, light-coloured bead remains.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Polyamide also melts. Flame colour, smell and the lighter bead separate it from polyester.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;Polyamide stretches more and takes more abrasion than polyester. That is why it is the classic choice for shoes and leather goods.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-pa_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>Polypropylene (PP)<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-4 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread melts very fast and burns with an almost colourless flame. The smell is waxy.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Polypropylene is the lightest of all common fibres &#8211; it even floats on water.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;PP is the lightest material. The same weight of thread gives you more metres on the machine.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-pp_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>Polyethylene (PE)<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-5 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread melts and drips like a candle. The smell is clearly waxy, the residue hard and light.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Polyethylene has the lowest melting point in this group. It softens earlier than PES and PA.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;Before we choose PE, let us check your washing, ironing and process temperatures. That is where its limit is.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-pe_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>Para-Aramid (Kevlar)<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-6 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread does not melt. It turns black in the flame and stops burning as soon as the flame is taken away.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Para-aramid chars instead of melting and is self-extinguishing. It also has very high tensile strength.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;This thread does not melt and does not drip. That is exactly what you need where heat and high load come together.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-kevlar_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>Meta-Aramid (Nomex)<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-7 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread chars and swells slightly. It does not melt and goes out by itself.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Meta-aramid is the softer, more flexible aramid. Its strength is lower than para-aramid, its wearing comfort higher.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;Same fibre family, different job: Nomex for flame protection and comfort, Kevlar for maximum strength.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-nomex_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>PTFE<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-8 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread does not burn. Nothing melts, nothing drips, the thread stays as it is.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PTFE is chemically almost inert and highly resistant to UV, weather and aggressive media.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;PTFE costs more, but the seam outlasts the fabric &#8211; outdoors, under UV and in contact with chemicals.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-ptfe_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>PEEK<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-9 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The thread hardly reacts. It chars in the flame and stops burning by itself.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PEEK is a high-performance plastic with a very high melting point, high strength and high chemical resistance.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;PEEK is the answer when high strength and high temperature come together in one technical application.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-peek_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Burn Test \u2014 <strong>Basalt<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-10 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nothing happens. The thread stays intact in the flame &#8211; no bead, no ash, no smoke.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Basalt is a mineral fibre made from rock. It is non-combustible by nature.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;If nothing at all happens in the flame, you are holding a mineral fibre. That is the reference for real non-combustibility.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-basalt_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details has-base-background-color has-background is-layout-flow wp-block-details-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><summary>Solubility Test \u2014 <strong>The Second Method<\/strong><\/summary>\n<div class=\"wp-block-columns has-link-color wp-elements-11 is-layout-flex wp-container-core-columns-is-layout-7e2b3e51 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"wp-block-paragraph\">What you see in the film <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A thread sample is put into a solvent in a petri dish. Some fibres dissolve, some swell, some stay unchanged.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you learn from it<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The solubility test is a second, independent way to identify a fibre. It confirms what the burn test suggested.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What you can say to a customer<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#8220;The burn test narrows it down, the solubility test confirms it. Two results that agree are something you can put in writing.&#8221;<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/07\/garne-9-16-v02-10_1.mp4\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n\n\n<div class=\"wp-block-query is-layout-flow wp-block-query-is-layout-flow\"><ul class=\"wp-block-post-template is-layout-flow wp-block-post-template-is-layout-flow\"><li class=\"wp-block-post post-2020 post type-post status-publish format-standard hentry category-allgemein nugget-ln-018 uk-technical-advisory-services region-global target_audience-all-employees\">\n<h2 style=\"letter-spacing:0px\" class=\"wp-block-post-title has-large-font-size\"><a href=\"https:\/\/www.amann.education\/?p=2020\" target=\"_self\" >Fiber Identification and the Burn Test<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-2070 post type-post status-publish format-standard hentry category-allgemein nugget-ln-019 uk-technical-advisory-services region-global target_audience-all-employees\">\n<h2 style=\"letter-spacing:0px\" class=\"wp-block-post-title has-large-font-size\"><a href=\"https:\/\/www.amann.education\/?p=2070\" target=\"_self\" >The Eight Yarn Constructions<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-2075 post type-post status-publish format-standard hentry category-allgemein nugget-ln-020 uk-technical-advisory-services region-global target_audience-all-employees\">\n<h2 style=\"letter-spacing:0px\" class=\"wp-block-post-title has-large-font-size\"><a href=\"https:\/\/www.amann.education\/?p=2075\" target=\"_self\" >Resulting Thread Properties<\/a><\/h2>\n<\/li><li class=\"wp-block-post post-2079 post type-post status-publish format-standard hentry category-allgemein nugget-ln-021 uk-technical-advisory-services region-global target_audience-all-employees\">\n<h2 style=\"letter-spacing:0px\" class=\"wp-block-post-title has-large-font-size\"><a href=\"https:\/\/www.amann.education\/?p=2079\" target=\"_self\" >The Ticket Range and Tex Number System<\/a><\/h2>\n<\/li><\/ul><\/div>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Stage 1 \u2014 Raw material<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"wp-custom-template-nugget","format":[],"meta":{"_acf_changed":false,"iawp_total_views":59,"_joinchat":[],"footnotes":"","_ppma_block_editor_authors":""},"categories":[1],"tags":[],"nugget":[51],"uk":[47],"region":[34],"target_audience":[8],"ppma_author":[24],"class_list":["post-2020","post","type-post","status-publish","format-standard","hentry","category-allgemein","nugget-ln-018","uk-technical-advisory-services","region-global","target_audience-all-employees"],"acf":[],"authors":[{"term_id":24,"user_id":3,"is_guest":0,"slug":"tutor-moon","display_name":"MOON TUTOR","avatar_url":{"url":"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/04\/star.svg","url2x":"https:\/\/www.amann.education\/wp-content\/uploads\/2026\/04\/star.svg"},"avatar_alt":"","avatar_decorative":"","author_category":"1","exclude_author":"","first_name":"MOON","last_name":"TUTOR","user_url":"https:\/\/www.amann.education","job_title":"","description":""}],"_links":{"self":[{"href":"https:\/\/www.amann.education\/index.php?rest_route=\/wp\/v2\/posts\/2020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.amann.education\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.amann.education\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2020"}],"version-history":[{"count":36,"href":"https:\/\/www.amann.education\/index.php?rest_route=\/wp\/v2\/posts\/2020\/revisions"}],"predecessor-version":[{"id":2163,"href":"https:\/\/www.amann.education\/index.php?rest_route=\/wp\/v2\/posts\/2020\/revisions\/2163"}],"wp:attachment":[{"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2020"},{"taxonomy":"format","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fformat&post=2020"},{"taxonomy":"nugget","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fnugget&post=2020"},{"taxonomy":"uk","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fuk&post=2020"},{"taxonomy":"region","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fregion&post=2020"},{"taxonomy":"target_audience","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Ftarget_audience&post=2020"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.amann.education\/index.php?rest_route=%2Fwp%2Fv2%2Fppma_author&post=2020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}