1.0VRMhttps://vrm.nl/en/Fernando Padmoshttps://vrm.nl/en/author/fernando/rich600338<blockquote class="wp-embedded-content" data-secret="pPRnlyW8ss"><a href="https://vrm.nl/en/specification-texts/">Specification texts</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://vrm.nl/en/specification-texts/embed/#?secret=pPRnlyW8ss" width="600" height="338" title="“Specification texts” — VRM" data-secret="pPRnlyW8ss" 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://vrm.nl/wp-includes/js/wp-embed.min.js </script> https://vrm.nl/wp-content/uploads/2026/06/Certificaten_download_vrm.jpg1024576VRM offers ready-to-use specification texts for PVC-U and HDPE monitoring wells, the BioBuis, and the LevelLog groundwater monitor. The texts are free to use without permission or attribution and are suitable for inclusion in specifications and tenders. If your product is not listed, VRM will draft a customized specification text.