{"id":5375,"date":"2020-06-29T01:29:24","date_gmt":"2020-06-29T01:29:24","guid":{"rendered":"http:\/\/rocker.designhu-demo.com\/application\/solvent_purification\/"},"modified":"2026-03-09T11:41:56","modified_gmt":"2026-03-09T03:41:56","slug":"solvent_purification","status":"publish","type":"application","link":"https:\/\/www.rocker.com.tw\/en\/application\/solvent_purification\/","title":{"rendered":"Solvent Purification"},"content":{"rendered":"<h2>Purification of solvents<\/h2>\n<p>&nbsp;<\/p>\n<p>Solvent purification is a critical topic in laboratory settings, encompassing various techniques and processes aimed at obtaining high-quality solvents for scientific research, synthesis, and analytical applications. This topic holds immense importance due to the significant role solvents play in various fields, including chemistry, biology, and materials science. Purification of solvents removes impurities such as water, oxygen, and contaminants, ensuring their suitability for sensitive experiments and reactions.<\/p>\n<p>By discussing solvent purification, we gain insight into the methods, equipment, and advancements used to achieve high-purity solvents, enhancing experimental reproducibility, accuracy, and safety.\u00a0<\/p>\n<blockquote><p><!-- Begin Mailchimp Signup Form --><\/p>\n<div id=\"mc_embed_signup\">\n<form id=\"mc-embedded-subscribe-form\" class=\"validate\" action=\"https:\/\/rocker.us12.list-manage.com\/subscribe\/post?u=58ef36f6c5073517cb6c76cc7&amp;id=454e696053&amp;f_id=0072bee0f0\" method=\"post\" name=\"mc-embedded-subscribe-form\" target=\"_self\">\n<div id=\"mc_embed_signup_scroll\">\n<h3>Subscribe for firsthand information!<\/h3>\n<p>&nbsp;<\/p>\n<div class=\"mc-field-group\"><label for=\"mce-EMAIL\">Email<span class=\"asterisk\">:<\/span> <\/label> <input id=\"mce-EMAIL\" class=\"required email\" name=\"EMAIL\" required=\"\" type=\"email\" value=\"\" \/> <span id=\"mce-EMAIL-HELPERTEXT\" class=\"helper_text\"><\/span> <input id=\"mc-embedded-subscribe\" class=\"button\" name=\"subscribe\" type=\"submit\" value=\"Subscribe\" \/><\/div>\n<div id=\"mce-responses\" class=\"clear\">\n<div id=\"mce-error-response\" class=\"response\" style=\"display: none;\">\u00a0<\/div>\n<div id=\"mce-success-response\" class=\"response\" style=\"display: none;\">\u00a0<\/div>\n<\/div>\n<p><!-- real people should not fill this in and expect good things - do not remove this or risk form bot signups--><\/p>\n<div style=\"position: absolute; left: -5000px;\" aria-hidden=\"true\"><input tabindex=\"-1\" name=\"b_58ef36f6c5073517cb6c76cc7_454e696053\" type=\"text\" value=\"\" \/><\/div>\n<\/div>\n<\/form>\n<\/div>\n<p><!--End mc_embed_signup--><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<div style=\"background-color: #e9eef0; padding: 10px 20px;\"><span style=\"font-size: 20px;\"><strong>Content<\/strong><\/span><br \/>\n<a href=\"#P1\">Definition of solvent purification<\/a><br \/>\n<a href=\"#P2\">Most common grades for reagents &amp; solvents<\/a><br \/>\n<a href=\"#P3\">Solvent filtration process<\/a> <br \/>\n<a href=\"#P4\">Solvent filtration apparatus and assembly<\/a> <br \/>\n<a href=\"P5\">Solvent purification applications<\/a><\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2><a id=\"P1\"><\/a>Definition of solvent purification<\/h2>\n<p>&nbsp;<\/p>\n<p>Solvent purification involves the removal of unwanted particles or impurities from solvents or reagents through methods such as distillation, recrystallization, or filtration. Solvent filtration, in particular, is a commonly employed technique in the pre-treatment of precise analyses, such as HPLC.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2><a id=\"P2\"><\/a>Most common grades for reagents &amp; solvents<\/h2>\n<p>&nbsp;<\/p>\n<p>Organic solvents are widely used in many laboratory experiments with different purity grades. Below, I have listed the most common grades:<\/p>\n<ul>\n<li>Guarantee Reagent, GR<\/li>\n<li>Reagent Grade, RG<\/li>\n<li>Analar Reagent, AR<\/li>\n<li>American Chemical Society, ACS<\/li>\n<li>United States Pharmacopoeia, USP<\/li>\n<li>Analysis<\/li>\n<li>Chromatography (HPLC, GC)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Solvent purification is essential for several analyses, including the use of solvents as mobile phases in HPLC (high-performance liquid chromatography) and LC-MS-MS (liquid chromatography-tandem mass spectrometry). The purpose is to prevent impurities from affecting experiment results or affecting the production rate. Vacuum filtration is a common method employed for such purification processes.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2><a id=\"P3\"><\/a>Solvent filtration process<\/h2>\n<p>&nbsp;<\/p>\n<p>Filtration is a solvent purification technique used to remove solid impurities from an organic solution by isolating the solids on membranes. The selection of membranes should consider sample characteristics, removal rate, and filtration time.<\/p>\n<p>There are two common methods of solvent filtration: gravity filtration and vacuum filtration. <a href=\"https:\/\/www.rocker.com.tw\/en\/application\/vacuum-filtration\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Vacuum filtration<\/a> utilizes pressure differences to accelerate the filtration process, making it generally much faster than gravity filtration.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2><a id=\"P4\"><\/a>Solvent filtration apparatus and assembly<\/h2>\n<p>&nbsp;<\/p>\n<p>A solvent filtration kit typically includes the following components: a chemical-resistant vacuum pump, a safety trap, a receiver flask, and a set of filter holders.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.rocker.com.tw\/wp-content\/uploads\/2022\/06\/Rocker300C_VF12Hoop_\u6a19\u8a3bEn.jpg\" alt=\"Solvent purification system, contains chemical resistant vacuum pump, solvent filters and flask\" width=\"1500\" height=\"921\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3>A. Chemical resistant vacuum pump<\/h3>\n<p>&nbsp;<\/p>\n<p>Most solvents that require purification are organic solvents, acids, and alkaline solutions. Considering the safety of analysts and the resistance of the pumps to corrosive chemicals, it is highly recommended to use chemical-resistant pumps for these applications.<\/p>\n<blockquote>\n<table class=\"no-border\">\n<tbody>\n<tr>\n<td style=\"vertical-align: middle;\" rowspan=\"2\" width=\"60%\">All wetted parts of ROCKER&#8217;s chemical-resistant vacuum pump are made of corrosion-resistant materials. <br \/>\n\uff0d <a href=\"https:\/\/www.rocker.com.tw\/en\/product-category\/laboratory-pump-en\/chemical-resistant-vacuum-pump-en\/\" target=\"_blank\" rel=\"noopener\">Chemker Chemical Resistant Vacuum Pump<\/a><br \/>\nMade of PTFE, provides high resistance to corrosive and aggressive gases.<br \/>\n\uff0d <a href=\"https:\/\/www.rocker.com.tw\/en\/product-category\/laboratory-pump-en\/ptfe-coated-chemical-resistant-vacuum-pump-en\/\" target=\"_blank\" rel=\"noopener\">Rocker C PTFE-coated Pump<\/a><br \/>\nPTFE-coated, provides moderate resistance to most chemicals including alcohol and alkane.<\/td>\n<td width=\"40%\">\n<p><img decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.rocker.com.tw\/wp-content\/uploads\/2020\/08\/Chemker411_01.jpg\" alt=\"a chemical resistant diaphragm pump that is suitable for solvent purification and solvent filtration\" width=\"500\" height=\"383\" \/><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><a href=\"https:\/\/www.rocker.com.tw\/en\/product-category\/laboratory-pump-en\/chemical-resistant-vacuum-pump-en\/\">Chemker Chemical-resistant Pump<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/blockquote>\n<div style=\"background-color: #e9eef0; padding: 10px 20px;\"><span style=\"font-style: italic;\">Read more:<br \/>\n<a href=\"https:\/\/www.youtube.com\/watch?v=PSsXbLlJWv4\" target=\"_blank\" rel=\"noopener\">Rocker Extreme Lab &#8211; Chemker Pump V.S. Aqua Regia<\/a><\/span><\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h3>B. Receiver flask and filter holder<\/h3>\n<p>&nbsp;<\/p>\n<p>Borosilicate glass is the recommended material for receiver flasks and filter holders used in solvent filtration to prevent damage caused by organic solvents and corrosive chemicals. The choice of materials for the membrane support can be either fritted glass or stainless steel, depending on specific requirements.<\/p>\n<blockquote>\n<table class=\"no-border\">\n<tbody>\n<tr>\n<td style=\"vertical-align: middle;\" rowspan=\"2\" width=\"60%\">ROCKER&#8217;s\u00a0<a href=\"https:\/\/www.rocker.com.tw\/en\/product\/laboratory-filtration-system\/filtration-apparatus\/vf-3-filtration-apparatus\/\" target=\"_blank\" rel=\"noopener\">VF Filtration Apparatus<\/a><br \/>\n&#8211; Borosilicate glass-made, high resistance to heat and chmicals<br \/>\n&#8211; Clear scale marking for precise and easier sample addition<br \/>\n&#8211; Optional sintered glass-made or stainless steel-made filter support screen<br \/>\n&#8211; Spill-proof silicone base\u00a0<a href=\"https:\/\/www.rocker.com.tw\/en\/product\/laboratory-filtration-system\/filtration-apparatus\/vf-3-filtration-apparatus\/\" target=\"_blank\" rel=\"noopener\">VF3<\/a>\u3001<a href=\"https:\/\/www.rocker.com.tw\/en\/product\/laboratory-filtration-system\/filtration-apparatus\/vf-6-filtration-apparatus\/\" target=\"_blank\" rel=\"noopener\">VF6<\/a>\u3001<a href=\"https:\/\/www.rocker.com.tw\/en\/product\/laboratory-filtration-system\/filtration-apparatus\/vf-7-filtration-apparatus\/\" target=\"_blank\" rel=\"noopener\">VF7<\/a><\/td>\n<td width=\"40%\">\n<p><img decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.rocker.com.tw\/wp-content\/uploads\/2021\/01\/Rocker300C_VF12\u589e\u52a0\u652f\u67b6.jpg\" alt=\"a complete lab-scale solvent purification and solvent filtration system with vacuum pump, filtration funnels and flask\" width=\"500\" height=\"383\" \/><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><a href=\"https:\/\/www.rocker.com.tw\/en\/product\/laboratory-filtration-system\/solvent-filtration-system\/rocker-300c-vf-12-filtration-system-for-solvent\/\">Rocker 300C-VF12 Solvent Purification System<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/blockquote>\n<div style=\"background-color: #e9eef0; padding: 10px 20px;\"><span style=\"font-style: italic;\">Read more:<br \/>\n<a href=\"https:\/\/www.youtube.com\/watch?v=gq-V9cmocbg&amp;list=PLbsN2_Rc-KRjq30GNHtfYE2RH7ggUhBAG&amp;index=5\" target=\"_blank\" rel=\"nofollow noopener\">Rocker Discover \/\/ Never spill again!!<\/a><br \/>\n<a href=\"https:\/\/www.youtube.com\/watch?v=fqd7fWUkv4U&amp;list=PLbsN2_Rc-KRjq30GNHtfYE2RH7ggUhBAG&amp;index=4\" target=\"_blank\" rel=\"nofollow noopener\">Rocker Discover \/\/ Wow! This receiver flask is multifunctional<\/a><\/span><\/div>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2><a id=\"P5\"><\/a>Solvent purification applications<\/h2>\n<p>&nbsp;<\/p>\n<ul>\n<li>Mobile phase purification for HPLC\u3001LC\/MS\/MS analysis. <br \/>\nfor example, Acetonitrile, methanol, and tetrahydrofuran.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_29055\" aria-describedby=\"caption-attachment-29055\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.rocker.com.tw\/en\/contact\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-29055 size-full\" src=\"https:\/\/www.rocker.com.tw\/wp-content\/uploads\/2023\/04\/rocker-scientific-global-dealer-network-quick-quote-1.webp-1.webp\" alt=\"Rocker Global Dealer Network banner offering dedicated support from local experts in USA, India, China, Indonesia, Malaysia, and worldwide for quick quotes.\" width=\"900\" height=\"120\" srcset=\"https:\/\/www.rocker.com.tw\/wp-content\/uploads\/2023\/04\/rocker-scientific-global-dealer-network-quick-quote-1.webp-1.webp 900w, https:\/\/www.rocker.com.tw\/wp-content\/uploads\/2023\/04\/rocker-scientific-global-dealer-network-quick-quote-1.webp-1-768x102.webp 768w, https:\/\/www.rocker.com.tw\/wp-content\/uploads\/2023\/04\/rocker-scientific-global-dealer-network-quick-quote-1.webp-1-600x80.webp 600w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/a><figcaption id=\"caption-attachment-29055\" class=\"wp-caption-text\">Global expert support across USA, Asia, and worldwide. \u25b2Click to get a quick quote from your local Rocker dealer.<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p><strong>References:<br \/>\n<\/strong><\/p>\n<p><a href=\"https:\/\/www.labmanager.com\/business-management\/the-seven-most-common-grades-for-chemicals-and-reagents-2655\" rel=\"nofollow\">The Seven Most Common Grades for Chemicals and Reagents | Lab Manager<\/a><br \/>\n<a href=\"http:\/\/www.advtechind.com\/grade.htm\" rel=\"nofollow\">Purity and Grading (advtechind.com)<\/a><br \/>\n<a href=\"https:\/\/www.differencebetween.com\/difference-between-filtration-and-purification\/\" target=\"_blank\" rel=\"nofollow noopener\">Difference Between Filtration and Purification<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Purification of solvents &nbsp; Solvent purification is a critical topic in laboratory settings, encompassing various techniques and processes aimed at obtaining high-quality solvents for scientific research, synthesis, and analytical applications. This topic holds immense importance due to the significant role solvents play in various fields, including chemistry, biology, and materials science. Purification of solvents removes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4916,"parent":0,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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