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class="breadcrumb-nav"> <ol class="breadcrumb-nav-list"> <li class="breadcrumb-nav-list-item"><a href="../guide.html">Guide</a></li> <li class="breadcrumb-nav-list-item"><span>4 - Wash and Sterilize Tools and Vials</span></li> </ol> </nav> <div id="main-content" class="main-content" role="main"> <h1 id="wash-and-sterilize-tools-and-vials"> <a href="4-sterilize.html#wash-and-sterilize-tools-and-vials" class="anchor-heading" aria-labelledby="wash-and-sterilize-tools-and-vials"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Wash and Sterilize Tools and Vials </h1> <p>Now that you have a clean room that is more or less clean, you can start bringing your tools inside of it. <a href="../topics/alcohol_technique.html">Wipe down everything with isopropyl alcohol 70%</a> before bringing it inside the room. This includes wiping down the outside of plastic bags, etc. You should be wearing gloves that you are frequently sanitizing with the isopropyl alcohol. The goal here is that everything in this room is clean and sanitized, so if your hands are dirty or your shoes are dirty etcetera then you are working against yourself and the final sterility of your vials.</p> <p>Set up your laminar flow hood or your still air box, ensuring that you wipe down the whole thing with alcohol to sanitize before use. If you are using a laminar flow hood you can turn it on now so that you can begin circulating more filtered air through your clean room.</p> <h2 id="depyrogenation"> <a href="4-sterilize.html#depyrogenation" class="anchor-heading" aria-labelledby="depyrogenation"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Depyrogenation </h2> <p>All glassware and vials must be <a href="../topics/sanitize_sterilize_depyrogenate.html">depyrogenated</a> prior to use.<sup id="fnref:1" role="doc-noteref"><a href="4-sterilize.html#fn:1" class="footnote" rel="footnote">1</a></sup> The technique we are using will sterilize them at the same time.</p> <p>Preheat your oven to 250°C/485°F for depyrogenation. You should have an oven thermometer inside your oven to verify that you’re at the right temperature. Hotter is okay.</p> <p>Before you can depyrogenate your vials you need to wash them out to ensure that they are free from debris. We do this by dunking everything into a large pot of warm soapy water, shaking each vial underwater back and forth and then rinsing well with cold, distilled water.</p> <p>No need to let the vials air/drip dry. If you used distilled water to rinse then it will leave to residue when you put it in the oven. Wrap your vials and glassware in aluminum foil in a way that will let steam escape but not let dust etc fall in, e.g. loosely fitted hats. Once your oven is at temperature put the items inside. You need to let the items get to the correct 250°C temp,<sup id="fnref:2" role="doc-noteref"><a href="4-sterilize.html#fn:2" class="footnote" rel="footnote">2</a></sup> and then <em>once</em> they are at temp you should bake for at least 30 minutes.<sup id="fnref:3" role="doc-noteref"><a href="4-sterilize.html#fn:3" class="footnote" rel="footnote">3</a></sup> It is difficult to determine when the items are at 250°, if you have a laser thermometer you could use that. Otherwise, we recommend you be play it very safe and give it an hour to get up to temp. This means you would have the items in the oven for 90 minutes after pre-heating.</p> <p>Once the time is up transfer the tray with the still wrapped glassware from the oven directly into your clean room. Keep wrapped.</p> <h2 id="sterilization-in-autoclave"> <a href="4-sterilize.html#sterilization-in-autoclave" class="anchor-heading" aria-labelledby="sterilization-in-autoclave"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Sterilization in Autoclave </h2> <p class="warning">If you are using a pressure cooker to sterilize instead of an autoclave you should be sure to read <a href="../topics/instant_pot.html">this page</a>.</p> <p>Items that can’t be depyrogenated in the oven should be sterilized in the autoclave. While vial caps and stoppers are typically depyrogenated with pressurized Water For Injections (WFI) that is currently beyond the scope of what we feel we can achieve at home (if you’re distributing your vials please consider learning how to do this).</p> <p>Wrap items in foil in a way that will allow steam penetration but will help keep them protected from microbes in the air when you remove them.</p> <p>Vial caps, stoppers, vial crimper (if it fits and if it’s rated for autoclaves), any utensils etc that didn’t go in the oven.</p> <p>Your autoclave should operate at <strong>121°C at 15psi for 60 minutes</strong>.<sup id="fnref:4" role="doc-noteref"><a href="4-sterilize.html#fn:4" class="footnote" rel="footnote">4</a></sup> In a lab setting you might be able to leave it in for less than 60 minutes, but since we are unable to do certain validation testing at home, you should opt for this longer time.</p> <h2 id="sanitize-whats-left"> <a href="4-sterilize.html#sanitize-whats-left" class="anchor-heading" aria-labelledby="sanitize-whats-left"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Sanitize what’s left </h2> <p>Anything you couldn’t put in the oven or autoclave should be sanitized with 70% IPA. Examples like the work surface and scale.</p> <h2 id="fingertip-testing"> <a href="4-sterilize.html#fingertip-testing" class="anchor-heading" aria-labelledby="fingertip-testing"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Fingertip Testing<sup>+</sup> </h2> <p>If you are going to do fingertip testing<sup>+</sup>, now is the time to take the before sample. <a href="../topics/fingertip_testing.html">How to perform fingertip testing</a>.</p><hr /> <h2 id="navigation"> <a href="4-sterilize.html#navigation" class="anchor-heading" aria-labelledby="navigation"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Navigation </h2> <p><a href="3-work-area.html" class="btn btn-purple">← 3. Prepare Work Area</a> <a href="5-mix.html" class="btn btn-purple">5. Mix Solution →</a></p><hr /> <h2 id="references-and-notes"> <a href="4-sterilize.html#references-and-notes" class="anchor-heading" aria-labelledby="references-and-notes"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> References and Notes </h2> <hr /> <div class="footnotes" role="doc-endnotes"> <ol> <li id="fn:1" role="doc-endnote"> <p><em>Compounding Sterile Preparations</em> page 274 <a href="4-sterilize.html#fnref:1" class="reversefootnote" role="doc-backlink">↩</a></p> </li> <li id="fn:2" role="doc-endnote"> <p>If a vial is 25°C, and you put it in the oven, it won’t instantly become 250°C. Therefore, you need to give it time to get up to temp. <a href="4-sterilize.html#fnref:2" class="reversefootnote" role="doc-backlink">↩</a></p> </li> <li id="fn:3" role="doc-endnote"> <p><a href="https://www.dwkltd.com/pub/media/wysiwyg/literature/DWK-Depyrogenation-of-Pharmaceutical-Packaging-Components-UK-A42022.pdf">DEPYROGENATION OF PHARMACEUTICAL PACKAGING COMPONENTS</a> <a href="4-sterilize.html#fnref:3" class="reversefootnote" role="doc-backlink">↩</a></p> </li> <li id="fn:4" role="doc-endnote"> <p><em>Compounding Sterile Preparations</em> pages 253-254 <a href="4-sterilize.html#fnref:4" class="reversefootnote" role="doc-backlink">↩</a></p> </li> </ol> </div> </div> </div> <div class="search-overlay"></div> </div> </body> </html>
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