{"id":44840,"date":"2022-03-22T08:02:18","date_gmt":"2022-03-22T07:02:18","guid":{"rendered":"https:\/\/test.steinmuehle.de\/blog\/2022\/03\/22\/youth-tests-white-as-white-as-it-gets-11th-graders-test-stain-removers\/"},"modified":"2026-06-18T17:35:35","modified_gmt":"2026-06-18T15:35:35","slug":"youth-tests-white-as-white-as-it-gets-11th-graders-test-stain-removers","status":"publish","type":"post","link":"https:\/\/steinmuehle.de\/en\/blog\/2022\/03\/22\/youth-tests-white-as-white-as-it-gets-11th-graders-test-stain-removers\/","title":{"rendered":"Youth Tests \u2014 White, as white as it gets? 11th-graders test stain removers"},"content":{"rendered":"

Joshua Wieder, Morten K\u00f6hler, and Benjamin Schul have long been part of a research team at Steinm\u00fchle. This year, they\u2019ve taken a break from the \u201cJugend forscht\u201d competition, in which they\u2019ve participated regularly since 6th grade.
\nBut these three students simply can\u2019t go without doing some research. On Fridays in the \u201cOpen Lab,\u201d they investigated the effectiveness of oxygen-based detergents, which are also used in laundry as stain removers or bleaches. The packaging often advertises stain removal starting at just 20\u00b0C. The team wanted to take a closer look at bold advertising claims such as \u201cWith active oxygen for brilliant whites\u201d or \u201cChlorine-free laundry booster.\u201d
\nFor these investigations, they purchased various oxygen-based detergents and examined several criteria that might be important to consumers.
\nAmong other things, they used a test apparatus they developed themselves to measure oxygen release at specific temperatures and the amount of oxygen produced for various stain-removing salts, since oxygen is responsible for the bleaching process.
\nThis was followed by a practical test at various wash temperatures using red wine and ink stains. They also checked whether the stains bled onto the fabric surrounding the stain during washing (stain transfer). All results were compiled into tables to identify a test winner and, taking the purchase price into account, a best-value winner.
\nThe result was somewhat predictable: not all advertising claims can be fulfilled. Among other things, the team was able to show that red wine stains are generally more difficult to remove. Only a single product ultimately received a \u201cvery good\u201d rating from them. Another product, which received a \u201cgood\u201d rating, was named the best value for money. <\/p>\n

The results were documented in a report and submitted <\/strong>to the \u201cJugend Testet\u201d <\/strong>competition. Through the end of May, the entries will be evaluated by a jury composed of experts from Stiftung Warentest and other reviewers from the media and consumer protection sectors. The judges will evaluate how the tests were conducted, how thoroughly the work was carried out and documented, and whether the test results are transparent.
\nWe\u2019re keeping our fingers crossed for the team! <\/p>\n

\"\"<\/a> \"\"<\/a> \"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Joshua Wieder, Morten K\u00f6hler, and Benjamin Schul have long been part of a research team at Steinm\u00fchle. This year, they\u2019ve taken a break from the \u201cJugend forscht\u201d competition, in which they\u2019ve participated regularly since 6th grade. But these three students simply can\u2019t go without doing some research. On Fridays in the \u201cOpen Lab,\u201d they investigated […]<\/p>\n","protected":false},"author":11,"featured_media":44842,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"give_campaign_id":0,"footnotes":""},"categories":[85,105],"tags":[],"class_list":["post-44840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-stem"],"acf":[],"_links":{"self":[{"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/posts\/44840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/comments?post=44840"}],"version-history":[{"count":1,"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/posts\/44840\/revisions"}],"predecessor-version":[{"id":49314,"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/posts\/44840\/revisions\/49314"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/media\/44842"}],"wp:attachment":[{"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/media?parent=44840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/categories?post=44840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steinmuehle.de\/en\/wp-json\/wp\/v2\/tags?post=44840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}