1.0MetroLabhttps://metrolab.grpraktikihttps://metrolab.gr/index.php/author/praktiki/rich600338<blockquote class="wp-embedded-content" data-secret="7f74BCF7C0"><a href="https://metrolab.gr/index.php/2026/04/06/polyethylene-glycol/">Polyethylene Glycol</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://metrolab.gr/index.php/2026/04/06/polyethylene-glycol/embed/#?secret=7f74BCF7C0" width="600" height="338" title="“Polyethylene Glycol” — MetroLab" data-secret="7f74BCF7C0" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://metrolab.gr/wp-includes/js/wp-embed.min.js </script> https://metrolab.gr/wp-content/uploads/2026/04/Trajan_SGE-phase-07_2021.jpg18031BP21, BP20, SolGel-WAX™ (PEG) ‘wax’ type phases where the main separation mechanisms are hydrogen bonding or dipole interactions. The wax phases are often considered as ideal for mixtures of chemically different components such as those contained in essential oils.