IVF Knowledge

  When it comes to IVF, every detail in the cryogenic process matters including the sperm straws used for collection, freezing, and storage. These tiny tubes play a big role in protecting valuable genetic material, so quality and compatibility aren’t things you can compromise on. What Sperm Straws Are Sperm straws are thin, sealed tubes designed to store semen samples in liquid nitrogen. They’re typically made from biocompatible plastic and are hermetically sealed to prevent contamination or cross-mixing. In IVF labs, they’re used for freezing, identifying, and thawing samples during assisted reproduction procedures. What Makes a Good Sperm Straw A reliable sperm straw should: Maintain integrity at ultra-low temperatures  down to -196 °C. Be hermetically sealed  to prevent leakage or contamination. Offer clear identification  through colour coding or printed lab codes. Be compatible  with cryogenic accessories like visotubes, goblets, and canisters. In short, th...

  If you’re looking for reliable LN2 tanks in the UK, you’re in the right place. These vessels aren’t just cold containers they’re precision-engineered systems designed to hold liquid nitrogen at around –196°C, keeping biological samples, medical materials, and other sensitive contents safe from heat and contamination. The challenge isn’t finding  a  tank it’s finding one that’s built to last, easy to handle, and supported by people who genuinely understand cryogenics. What LN2 Tanks Actually Are An LN2 tank, also known as a liquid nitrogen dewar or storage vessel, is designed to safely contain and manage liquid nitrogen. They come in a range of capacities and formats depending on your needs from smaller units for regular refilling to large storage models used in labs, IVF centres, and cryobanks. What really matters is insulation quality and vacuum integrity. A well-designed tank maintains temperature for extended periods, reduces nitrogen loss, and keeps samples secure n...

When biological samples need to move between labs, clinics, or research facilities, keeping them frozen and secure is non-negotiable. The challenge is doing that safely especially during air or long-distance transport without risking leaks or contamination. That’s exactly what a Dry Shipper is built for. What Is a Dry Shipper? A Dry Shipper is a specialised cryogenic container used to transport biological materials at ultra-low temperatures. Unlike standard liquid nitrogen (LN₂) tanks that hold free liquid, a Dry Shipper absorbs LN₂ into a porous absorbent material. This keeps the nitrogen locked inside, allowing the container to maintain cryogenic temperatures without any liquid movement or spillage. The result: you get all the cooling power of LN₂, without the hazards associated with transporting liquid nitrogen. How Does a Dry Shipper Work? Before use, the Dry Shipper is charged with liquid nitrogen until its inner absorbent is fully saturated. Once the excess LN₂ is poured out, onl...

    When it comes to cryogenic storage, temperature stability isn’t just important—it’s everything. Biological samples such as embryos, sperm, oocytes, and tissues remain viable only when held consistently at -196 °C. Even a small fluctuation can compromise years of research or treatment. That’s why laboratories and fertility clinics across the UK depend on Cryolab’s CryoNest® liquid nitrogen storage tanks engineered to deliver unmatched stability, safety, and longevity. Built for Precision, Designed for Real Labs Every CryoNest® tank is developed with meticulous attention to performance. Using durable aluminium or stainless steel construction and high-efficiency insulation, the system minimises nitrogen evaporation and maintains consistent cryogenic conditions. The range covers everything from compact dewars for everyday use to high-capacity units for large biobanks. With narrow- and wide-neck options, extended-hold models, and integrated rack systems, CryoNest® offer...

  When it comes to cryogenic storage, precision and organisation matter just as much as temperature control. CBS offers a complete range of Identification (ID) and Obturating Rods designed to keep samples clearly labelled, securely sealed, and easy to retrieve even under liquid nitrogen. Thick and Thin ID Rods for Visotubes Available in both thick and thin diameters, these ID rods provide a simple, durable way to label Visotubes. Their colour-coded design allows quick visual identification, helping technicians maintain order and efficiency during cryogenic storage or retrieval. Built to withstand extreme cold, they remain legible and secure throughout repeated freezing cycles. CBS ID and Obturating Rods For classic PETG straws, these rods serve two purposes identification and sealing. Each 42 mm rod ensures a clear, visible label while also providing a tight obturation to protect valuable samples. Sold in sets of five and available in multiple colours, they’re a practical and organ...

  In cryopreservation, every detail counts. CBS Sterile Filling Nozzles offer laboratories a dependable way to fill High Security Straws accurately, ensuring samples remain uncontaminated and secure. These nozzles are designed for precision, reliability, and ease of use, making them an essential tool for labs handling delicate biological materials. Accurate Filling Every Time Filling straws correctly is crucial when working with sensitive samples such as sperm, oocytes, or other biological material. CBS Sterile Filling Nozzles provide controlled manual filling, ensuring each straw is filled consistently and cleanly. By reducing waste and preventing spillage, they help maintain the integrity of every sample. Sterility You Can Trust Each nozzle comes pre-sterilised, so there’s no need for additional preparation before use. This built-in sterility protects samples and supports compliance with strict biosecurity standards, which is essential for fertility clinics, research labs, and br...

The CBS High Security Vitrification Kits provide a complete solution for the safe vitrification of embryos, combining laboratory efficiency with uncompromised sample security. Designed to simplify handling and storage, these kits are available in multiple colours, making it easy to identify samples at a glance and reducing the risk of errors during routine laboratory work. Each kit is thoughtfully engineered to ensure precise and secure cryopreservation. It includes a High Security ionomeric resin straw, a capillary tube with a pre-formed gutter, a coloured handling rod, and a blue plastic insertion device. This combination allows for accurate sample placement, smooth handling, and secure storage, all while maintaining the integrity of your embryos throughout the cryopreservation process. Laboratory workflow is further enhanced by the intuitive design of the kits. The colour-coded components streamline organisation, reduce confusion, and speed up procedures, allowing embryologists to f...