{"id":1014,"date":"2010-12-09T14:21:53","date_gmt":"2010-12-09T20:21:53","guid":{"rendered":"https:\/\/www.coleparmer.com\/blog\/?p=1014"},"modified":"2019-09-24T11:23:49","modified_gmt":"2019-09-24T17:23:49","slug":"ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching","status":"publish","type":"post","link":"https:\/\/www.coleparmer.com\/blog\/ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching\/","title":{"rendered":"Ready for a Challenge? Test Your Knowledge of Hydrofluoric Acid in Etching"},"content":{"rendered":"<p><a href=\"https:\/\/www.coleparmer.com\/blog\/wp-content\/uploads\/2010\/12\/techchalllenge1.gif\"><img loading=\"lazy\" decoding=\"async\" title=\"TechChalllenge\" src=\"https:\/\/www.coleparmer.com\/blog\/wp-content\/uploads\/2010\/12\/techchalllenge1.gif\" alt=\"\" width=\"125\" height=\"91\"><\/a><\/p>\n<p><em>Read the scenario below, determine your answer, then click on the link to see if you are right!<\/em><\/p>\n<p>Luigi, a process engineer, currently uses a 20% hydrofluoric acid in his etching process. He is considering using a higher concentration of this acid in order to speed up his operation. Currently, he stores the acid in a 40-gallon double-wall tank made of high-density polyethylene (HDPE). He pumps the acid out of this tank using an air-operated pump with wetted materials of Kynar\u00ae PVDF and PTFE.<\/p>\n<p>What concentration of hydrofluoric acid can Luigi safely use given his current equipment?<\/p>\n<p>A. He needs to stay with his current 20% concentration there is no way to speed up the operation.<\/p>\n<p>B. He can increase to a 50% hydrofluoric acid to improve his process.<\/p>\n<p>C. He can increase to a 75% hydrofluoric acid to improve his process.<\/p>\n<p>D. He can increase to a 100% hydrofluoric acid for maximum speed.<\/p>\n<p><a href=\"https:\/\/www.coleparmer.com\/techinfo\/techinfo.asp?htmlfile=techchallenge101210.htm&amp;ID=1223&amp;referred_id=5618#anchor3\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">See the <\/a><a href=\"https:\/\/www.coleparmer.com\/techinfo\/techinfo.asp?htmlfile=techchallenge101210.htm&amp;ID=1223&amp;referred_id=5618#anchor3\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">answer.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Read the scenario below, determine your answer, then click on the link to see if you are right! Luigi, a process engineer, currently uses a 20% hydrofluoric acid in his etching process. He is considering&#8230;<\/p>\n","protected":false},"author":20,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[359,540,795,1578],"class_list":["post-1014","post","type-post","status-publish","format-standard","hentry","category-tech-challenge","tag-concentration","tag-etching","tag-hydrofluoric-acid","tag-tech-challenge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ready for a Challenge? Test Your Knowledge of Hydrofluoric Acid in Etching | from Cole-Parmer Blog<\/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:\/\/www.coleparmer.com.cn\/blog\/ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ready for a Challenge? Test Your Knowledge of Hydrofluoric Acid in Etching | from Cole-Parmer Blog\" \/>\n<meta property=\"og:description\" content=\"Read the scenario below, determine your answer, then click on the link to see if you are right! Luigi, a process engineer, currently uses a 20% hydrofluoric acid in his etching process. He is considering...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.coleparmer.com.cn\/blog\/ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching\/\" \/>\n<meta property=\"og:site_name\" content=\"Cole-Parmer Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/antylia\" \/>\n<meta property=\"article:published_time\" content=\"2010-12-09T20:21:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-09-24T17:23:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.coleparmer.com\/blog\/wp-content\/uploads\/2010\/12\/techchalllenge1.gif\" \/>\n<meta name=\"author\" content=\"Cole-Parmer Blog Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@antylia\" \/>\n<meta name=\"twitter:site\" content=\"@antylia\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Cole-Parmer Blog Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ready for a Challenge? Test Your Knowledge of Hydrofluoric Acid in Etching | from Cole-Parmer Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.coleparmer.com.cn\/blog\/ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching\/","og_locale":"en_US","og_type":"article","og_title":"Ready for a Challenge? Test Your Knowledge of Hydrofluoric Acid in Etching | from Cole-Parmer Blog","og_description":"Read the scenario below, determine your answer, then click on the link to see if you are right! Luigi, a process engineer, currently uses a 20% hydrofluoric acid in his etching process. He is considering...","og_url":"https:\/\/www.coleparmer.com.cn\/blog\/ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching\/","og_site_name":"Cole-Parmer Blog","article_publisher":"https:\/\/www.facebook.com\/antylia","article_published_time":"2010-12-09T20:21:53+00:00","article_modified_time":"2019-09-24T17:23:49+00:00","og_image":[{"url":"https:\/\/www.coleparmer.com\/blog\/wp-content\/uploads\/2010\/12\/techchalllenge1.gif","type":"","width":"","height":""}],"author":"Cole-Parmer Blog Team","twitter_card":"summary_large_image","twitter_creator":"@antylia","twitter_site":"@antylia","twitter_misc":{"Written by":"Cole-Parmer Blog Team","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.coleparmer.com.cn\/blog\/ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching\/#article","isPartOf":{"@id":"https:\/\/www.coleparmer.com.cn\/blog\/ready-for-a-challenge-test-your-knowledge-of-hydrofluoric-acid-in-etching\/"},"author":{"name":"Cole-Parmer Blog Team","@id":"https:\/\/www.coleparmer.com\/blog\/#\/schema\/person\/bd8d004d4d77d6b31800fa11177c6da9"},"headline":"Ready for a Challenge? 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